EP0471581A1 - Smoking article - Google Patents
Smoking article Download PDFInfo
- Publication number
- EP0471581A1 EP0471581A1 EP91307543A EP91307543A EP0471581A1 EP 0471581 A1 EP0471581 A1 EP 0471581A1 EP 91307543 A EP91307543 A EP 91307543A EP 91307543 A EP91307543 A EP 91307543A EP 0471581 A1 EP0471581 A1 EP 0471581A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- smoking article
- granular
- passage
- rod
- tobacco
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 230000000391 smoking effect Effects 0.000 title claims abstract description 26
- 239000008187 granular material Substances 0.000 claims abstract description 25
- 239000000463 material Substances 0.000 claims abstract description 20
- 239000007789 gas Substances 0.000 claims abstract description 16
- 239000000443 aerosol Substances 0.000 claims abstract description 9
- 150000001875 compounds Chemical class 0.000 claims abstract description 7
- 241000208125 Nicotiana Species 0.000 claims description 26
- 235000002637 Nicotiana tabacum Nutrition 0.000 claims description 26
- PEDCQBHIVMGVHV-UHFFFAOYSA-N Glycerine Chemical compound OCC(O)CO PEDCQBHIVMGVHV-UHFFFAOYSA-N 0.000 claims description 9
- SNICXCGAKADSCV-JTQLQIEISA-N (-)-Nicotine Chemical compound CN1CCC[C@H]1C1=CC=CN=C1 SNICXCGAKADSCV-JTQLQIEISA-N 0.000 claims description 4
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 4
- 239000004743 Polypropylene Substances 0.000 claims description 4
- 239000000796 flavoring agent Substances 0.000 claims description 4
- 235000019634 flavors Nutrition 0.000 claims description 4
- 229960002715 nicotine Drugs 0.000 claims description 4
- SNICXCGAKADSCV-UHFFFAOYSA-N nicotine Natural products CN1CCCC1C1=CC=CN=C1 SNICXCGAKADSCV-UHFFFAOYSA-N 0.000 claims description 4
- -1 polypropylene Polymers 0.000 claims description 4
- 229920001155 polypropylene Polymers 0.000 claims description 4
- 239000000919 ceramic Substances 0.000 claims description 3
- 238000001914 filtration Methods 0.000 claims description 3
- HCWCAKKEBCNQJP-UHFFFAOYSA-N magnesium orthosilicate Chemical compound [Mg+2].[Mg+2].[O-][Si]([O-])([O-])[O-] HCWCAKKEBCNQJP-UHFFFAOYSA-N 0.000 claims description 3
- 239000000391 magnesium silicate Substances 0.000 claims description 3
- 229910052919 magnesium silicate Inorganic materials 0.000 claims description 3
- 235000019792 magnesium silicate Nutrition 0.000 claims description 3
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 claims description 2
- 239000000284 extract Substances 0.000 claims description 2
- 238000009413 insulation Methods 0.000 claims description 2
- 230000014759 maintenance of location Effects 0.000 claims description 2
- 229920000098 polyolefin Polymers 0.000 claims description 2
- 239000011148 porous material Substances 0.000 claims description 2
- 239000010457 zeolite Substances 0.000 claims description 2
- 239000000779 smoke Substances 0.000 description 12
- 235000019504 cigarettes Nutrition 0.000 description 4
- 238000002485 combustion reaction Methods 0.000 description 3
- 239000000203 mixture Substances 0.000 description 3
- 229920002301 cellulose acetate Polymers 0.000 description 2
- 239000003245 coal Substances 0.000 description 2
- 238000000197 pyrolysis Methods 0.000 description 2
- 239000004113 Sepiolite Substances 0.000 description 1
- 230000003213 activating effect Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000009792 diffusion process Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000000835 fiber Substances 0.000 description 1
- 239000012774 insulation material Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 230000035699 permeability Effects 0.000 description 1
- 229910052624 sepiolite Inorganic materials 0.000 description 1
- 235000019355 sepiolite Nutrition 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
Images
Classifications
-
- A—HUMAN NECESSITIES
- A24—TOBACCO; CIGARS; CIGARETTES; SIMULATED SMOKING DEVICES; SMOKERS' REQUISITES
- A24D—CIGARS; CIGARETTES; TOBACCO SMOKE FILTERS; MOUTHPIECES FOR CIGARS OR CIGARETTES; MANUFACTURE OF TOBACCO SMOKE FILTERS OR MOUTHPIECES
- A24D1/00—Cigars; Cigarettes
- A24D1/04—Cigars; Cigarettes with mouthpieces or filter-tips
- A24D1/045—Cigars; Cigarettes with mouthpieces or filter-tips with smoke filter means
Definitions
- This invention relates to a smoking article which produces smoke and/or an aerosol that resembles tobacco smoke.
- a smoking article comprises a rod of smokable material and a downstream filter unit which includes granular material containing adsorbed compounds that will generate an aerosol when hot gases are passed through it and means for producing a flow of gases from the ignited tip of the smokable material which is hot enough to activate said granular material.
- the rod of smoking material is provided with a passage having impervious walls extending longitudinally therethrough to the filter unit.
- the passage may have a diameter in the range of 0.5 to 5.0 mm but preferably is in the range of 1.0 to 5.00 mm. Temperatures measured at the end of the passage can reach up to 550°C, thus providing sufficient heat to release components from granular material.
- the longitudinal passage can have a wall made from combustible material such as paper or reconstituted tobacco sheet and should be substantially impervious.
- the granules in the tip element can be provided as a granular element adjacent the end of the said passage, and thus can be backed by a conventional filter element.
- Granular materials such as alumina, magnesium silicate, zeolites, ceramics, activated carbon or other porous materials impregnated with selected components or compounds (e.g. nicotine, glycerol, tobacco flavours, tobacco extracts) are contained in a cavity adjacent to the end of a tobacco rod containing the longitudinal passage, and can be loose packed or in sintered form. Thus adsorbed components are desorbed when the hot gas mixture from the passage passes through the granular element of the filter unit.
- selected components or compounds e.g. nicotine, glycerol, tobacco flavours, tobacco extracts
- the desorbed components form an aerosol which preferably then pass through a low efficiency filter which can be made from cellulose acetate, polypropylene, paper or other similar filter material.
- Figures 1 to 5 are longitudinal cross-sectional views through five different embodiments of smoking articles according to the invention.
- the smoking article shown in Figure 1 comprises a cylindrical tobacco rod 1 made from conventionally processed and cut tobacco at a filling density of 150 to 300 mg cm3 wrapped in a cigarette paper 2 of porosity in the range of 4 to 150 CORESTA units but preferably 20 to 80 CORESTA units.
- a longitudinal passage 3 extends the length of the tobacco rod with the wall of the passage 4 being substantially impervious to air and made of cigarette paper or reconstituted tobacco sheet.
- smoke travels preferentially along the tobacco rod 1 whilst the hot gases travel along the passage 3 to a filter unit 5.
- Hot air/gas mixtures pass through a granular element 6 and desorb the components from granules 7.
- This filter should preferably be of very low retention so that maximum transfer is achieved from the granules to the smoker's mouth and can be made as a conventional filter from cellulose acetate, polypropylene, paper or other similar filter material.
- the granular material can be magnesium silicate, for example Sepiolite in granular form of for example 15 - 30 mesh, but in order to ease manufacture the granules could be sintered into a rod which is then cut to appropriate size, and between 50 - 200 mg. of granules can be contained in each filter unit.
- the overall length of the smoking article is in the range of 50 to 120 mm with an overall diameter of 5 mm to 8 mm, for example 7.8 mm.
- the granular material can be treated with nicotine and glycerol in the range of 0.5 % to 20 % w/w and 0 % to 40 % w/w respectively which will give rise to the release of nicotine when in use.
- This filter element which is located between the tobacco and the granular bed 6 is made of high efficiency material such as ultra-fine fibres of polypropylene or other polyolefin material and removes most of the smoke components that travel along the tobacco rod 1 preferentially.
- the quantity of smoke formed by combustion of tobacco that reaches the smoker's mouth is substantially reduced.
- a cavity 10 is located between the filter element 9 and the granular element 6. This allows the hot gas mixture to pass through a larger area of the granular element and helps to prevent the end 11 of the passage 3 becoming blocked with any ash that may come down the passage.
- Figure 4 shows a fourth embodiment of the present invention in which similar reference numerals are used to indicate similar parts as in Figure 1.
- the passage 3 extending axially throughout the length of the tobacco rod 1 is placed at the periphery thereof.
- a fifth embodiment of the present invention is shown in Figure 5 and which includes a thermal insulation section 12 made of for, example, ceramic or other thermal insulating fibres. This prevents excessive heat loss to the surroundings at the same time keeping the outside of the smoking article cool enough to hold. If desired the thermal insulation material 12 can also be arranged to act as a filter to remove the smoke which travels along the tobacco rod.
- the materials can be fine fibre and web materials.
- components and flavours are adsorbed onto granular materials in the filter element.
- air drawn through the central tube is heated by the burning coal and it is this hot air that "activates” the granular material by releasing components and flavours.
- These vapours condense and form an aerosol which then passes through the filter section.
- Use of the impervious tube ensures that there is no diffusion of the hot gas from the tube to the tobacco rod or of smoke into the tube.
Landscapes
- Cigarettes, Filters, And Manufacturing Of Filters (AREA)
Abstract
Description
- This invention relates to a smoking article which produces smoke and/or an aerosol that resembles tobacco smoke.
- It is well known that tobacco smoke consists of thousands of chemicals which are the result of pyrolysis and incomplete combustion of tobacco. Many smoking articles have been proposed that will reduce the amounts of these compounds whilst still maintaining an acceptable smoking article or product.
- According to the present invention, a smoking article comprises a rod of smokable material and a downstream filter unit which includes granular material containing adsorbed compounds that will generate an aerosol when hot gases are passed through it and means for producing a flow of gases from the ignited tip of the smokable material which is hot enough to activate said granular material.
- Preferably the rod of smoking material is provided with a passage having impervious walls extending longitudinally therethrough to the filter unit.
- When the tobacco rod is lit, hot gases from the burning coal travel preferentially along the passage to the filter end. These hot gases pass through the granular material, thus releasing adsorbed components and forming an aerosol. The quantity of hot gases transmitted along the passage is a function of its size, the density of the smokeable material surrounding it and the permeability of any outer wrapper. The passage may have a diameter in the range of 0.5 to 5.0 mm but preferably is in the range of 1.0 to 5.00 mm. Temperatures measured at the end of the passage can reach up to 550°C, thus providing sufficient heat to release components from granular material. The longitudinal passage can have a wall made from combustible material such as paper or reconstituted tobacco sheet and should be substantially impervious.
- The granules in the tip element can be provided as a granular element adjacent the end of the said passage, and thus can be backed by a conventional filter element.
- Granular materials such as alumina, magnesium silicate, zeolites, ceramics, activated carbon or other porous materials impregnated with selected components or compounds (e.g. nicotine, glycerol, tobacco flavours, tobacco extracts) are contained in a cavity adjacent to the end of a tobacco rod containing the longitudinal passage, and can be loose packed or in sintered form. Thus adsorbed components are desorbed when the hot gas mixture from the passage passes through the granular element of the filter unit.
- The desorbed components form an aerosol which preferably then pass through a low efficiency filter which can be made from cellulose acetate, polypropylene, paper or other similar filter material.
- The invention can be performed in various ways and some embodiments will now be described by way of example and with reference to the accompanying drawings in which :
- Figures 1 to 5 are longitudinal cross-sectional views through five different embodiments of smoking articles according to the invention.
- The smoking article shown in Figure 1 comprises a
cylindrical tobacco rod 1 made from conventionally processed and cut tobacco at a filling density of 150 to 300 mg cm³ wrapped in acigarette paper 2 of porosity in the range of 4 to 150 CORESTA units but preferably 20 to 80 CORESTA units. Alongitudinal passage 3 extends the length of the tobacco rod with the wall of thepassage 4 being substantially impervious to air and made of cigarette paper or reconstituted tobacco sheet. When the end of the smoking article is lit, smoke travels preferentially along thetobacco rod 1 whilst the hot gases travel along thepassage 3 to afilter unit 5. Hot air/gas mixtures pass through agranular element 6 and desorb the components fromgranules 7. These components form an aerosol and pass through anend filter 8 into the mouth of the smoker. This filter should preferably be of very low retention so that maximum transfer is achieved from the granules to the smoker's mouth and can be made as a conventional filter from cellulose acetate, polypropylene, paper or other similar filter material. - In the arrangement described above the granular material can be magnesium silicate, for example Sepiolite in granular form of for example 15 - 30 mesh, but in order to ease manufacture the granules could be sintered into a rod which is then cut to appropriate size, and between 50 - 200 mg. of granules can be contained in each filter unit.
- Typically, the overall length of the smoking article is in the range of 50 to 120 mm with an overall diameter of 5 mm to 8 mm, for example 7.8 mm.
- If desired the granular material can be treated with nicotine and glycerol in the range of 0.5 % to 20 % w/w and 0 % to 40 % w/w respectively which will give rise to the release of nicotine when in use.
- In the embodiment shown in Figure 2 the same reference numerals are used to indicate similar parts to that shown in Figure 1 but this embodiment includes an
additional filtration element 9. This filter element which is located between the tobacco and thegranular bed 6 is made of high efficiency material such as ultra-fine fibres of polypropylene or other polyolefin material and removes most of the smoke components that travel along thetobacco rod 1 preferentially. - In this embodiment the quantity of smoke formed by combustion of tobacco that reaches the smoker's mouth is substantially reduced.
- In the third embodiment, shown in Figure 3, a
cavity 10 is located between thefilter element 9 and thegranular element 6. This allows the hot gas mixture to pass through a larger area of the granular element and helps to prevent theend 11 of thepassage 3 becoming blocked with any ash that may come down the passage. - Figure 4 shows a fourth embodiment of the present invention in which similar reference numerals are used to indicate similar parts as in Figure 1. In this construction the
passage 3 extending axially throughout the length of thetobacco rod 1 is placed at the periphery thereof. - In order to retain heat within the area of the granules 7 a fifth embodiment of the present invention is shown in Figure 5 and which includes a
thermal insulation section 12 made of for, example, ceramic or other thermal insulating fibres. This prevents excessive heat loss to the surroundings at the same time keeping the outside of the smoking article cool enough to hold. If desired thethermal insulation material 12 can also be arranged to act as a filter to remove the smoke which travels along the tobacco rod. The materials can be fine fibre and web materials. - It is an object of the present invention to deliver an aerosol to the smoker with significantly reduced quantities of pyrolysis and combustion products from the tobacco. To achieve this, components and flavours are adsorbed onto granular materials in the filter element. When the cigarette is lit, air drawn through the central tube is heated by the burning coal and it is this hot air that "activates" the granular material by releasing components and flavours. These vapours condense and form an aerosol which then passes through the filter section. Use of the impervious tube ensures that there is no diffusion of the hot gas from the tube to the tobacco rod or of smoke into the tube.
- An additional feature of these designs is the flow characteristics of the hot air and smoke when a puff is taken on the cigarette. These flow characteristics have been modelled using a simple resistor network which indicates that smoke travels preferentially along the tobacco column whilst the hot air travels along the tube. It is for this reason that the
additional filter element 9 is shown in Figures 2 and 3 . It is the intention that the element is highly efficient, thus significantly reducing the quantity of smoke particles formed by the burning tobacco section which pass to the smoker. Gases passing through this route will be of low temperature and will not desborb components from the granular material. - In the present invention it is the hot air/gases passing along the tube that provides the activating effect on the granules. It has been shown that tobacco smoke itself at ambient temperature has no effect whatsoever on the granular material, as would be the case in Figures 2 and 3.
Claims (13)
- A smoking article comprising a rod of smokable material and a downstream filter unit which includes granular material containing adsorbed compounds that will generate an aerosol when hot gases are passed through it and means for providing a flow of gases from the ignited tip of the smokable material which is hot enough to activate said granular material.
- A smoking article as claimed in claim 1 in which the rod of smoking material is provided with a passage having impervious walls extending longitudinally therethrough to the filter unit.
- A smoking article as claimed in claim 2 in which the granules in said tip element are provided as a granular element adjacent the end of the said passage.
- A smoking article as claimed in claim 3 in which said granular element is backed by a conventional filter element.
- A smoking article as claimed in claim 3 or claim 4 in which a filtration element is provided between the smokable material and the granular element.
- A smoking article as claimed in claim 5 in which the filtration element is made from high efficiency material.
- A smoking article as-claimed in claim 6 in which the high efficiency material is ultra-fine fibres of polypropylene or polyolefin material.
- A smoking article as claimed in claims 4 to 7 in which the conventional filter element is made from a very low retention material.
- A smoking article as claimed in claims 3 to 8 in which the granular element is surrounded by a thermal insulation section.
- A smoking article as claimed in claims 2 to 8 in which said passage is substantially centrally co-axial with said tobacco rod.
- A smoking article as claimed in claims 2 to 8 in which said passage is located co-axially and at one side of said rod.
- A smoking article as claimed in claims 1 to 11 in which the granular material is alumina, magnesium silicate, zeolites, ceramics, activated carbon or other porous materials impregnated with selected components or compounds.
- A smoking article as claimed in claim 12 in which the selected components or compounds are nicotine, glycerol, tobacco flavours or tobacco extracts.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB909018131A GB9018131D0 (en) | 1990-08-17 | 1990-08-17 | Smoking article |
GB9018131 | 1990-08-17 |
Publications (2)
Publication Number | Publication Date |
---|---|
EP0471581A1 true EP0471581A1 (en) | 1992-02-19 |
EP0471581B1 EP0471581B1 (en) | 1995-12-13 |
Family
ID=10680856
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP91307543A Expired - Lifetime EP0471581B1 (en) | 1990-08-17 | 1991-08-15 | Smoking article |
Country Status (13)
Country | Link |
---|---|
EP (1) | EP0471581B1 (en) |
JP (1) | JP3012714B2 (en) |
AU (1) | AU653163B2 (en) |
CA (1) | CA2049364C (en) |
DE (1) | DE69115383T2 (en) |
DK (1) | DK0471581T3 (en) |
ES (1) | ES2082930T3 (en) |
GB (1) | GB9018131D0 (en) |
GR (1) | GR3018910T3 (en) |
IE (1) | IE74219B1 (en) |
MY (1) | MY112865A (en) |
NZ (1) | NZ239440A (en) |
ZA (1) | ZA916492B (en) |
Cited By (28)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO1996003060A1 (en) * | 1994-07-28 | 1996-02-08 | Lorillard Tobacco Company | Hollow smokable article |
US5643245A (en) * | 1991-10-01 | 1997-07-01 | The Procter & Gamble Company | Absorbent article having tucked flaps |
WO2007093852A2 (en) * | 2005-12-29 | 2007-08-23 | Philip Morris Products S.A. | Smoking article with improved delivery profile |
WO2008084333A3 (en) * | 2006-12-29 | 2008-11-06 | Philip Morris Prod | Smoking article with concentric hollow core in tobacco rod and capsule containing flavorant and aerosol forming agents in the filter system |
CN100559977C (en) * | 2003-02-14 | 2009-11-18 | 菲利普莫里斯生产公司 | Cigarette with porous heat transfer tube |
US7878963B2 (en) | 2006-03-28 | 2011-02-01 | Philip Morris Usa Inc. | Smoking article with a restrictor |
US7987856B2 (en) | 2005-12-29 | 2011-08-02 | Philip Morris Usa Inc. | Smoking article with bypass channel |
US8235057B2 (en) | 2007-03-09 | 2012-08-07 | Philip Morris Usa Inc. | Smoking article with open ended filter and restrictor |
US8353302B2 (en) | 2007-03-09 | 2013-01-15 | Philip Morris Usa Inc. | Smoking articles with restrictor and aerosol former |
US8424540B2 (en) | 2009-10-09 | 2013-04-23 | Philip Morris Usa Inc. | Smoking article with valved restrictor |
US8424539B2 (en) | 2006-08-08 | 2013-04-23 | Philip Morris Usa Inc. | Smoking article with single piece restrictor and chamber |
US8434499B2 (en) | 2009-10-09 | 2013-05-07 | Philip Morris Usa Inc. | Filter design for improving sensory profile of carbon filter-tipped smoking articles |
US8770187B2 (en) | 2008-05-06 | 2014-07-08 | British American Tobacco (Investments) Limited | Aerosol dispensing device |
US8905037B2 (en) | 2009-10-15 | 2014-12-09 | Philip Morris Inc. | Enhanced subjective activated carbon cigarette |
WO2014132182A3 (en) * | 2013-02-27 | 2015-01-08 | Philip Morris Products, S.A. | Smoking article having botanical material as flavourant |
US9138016B2 (en) | 2010-03-26 | 2015-09-22 | Philip Morris Usa Inc. | Smoking articles with significantly reduced gas vapor phase smoking constituents |
CN107072311A (en) * | 2014-11-10 | 2017-08-18 | 日本烟草产业株式会社 | Non-combustion-type fragrance extractor |
CN107072310A (en) * | 2014-11-10 | 2017-08-18 | 日本烟草产业株式会社 | Cigarette bullet and non-combustion-type fragrance extractor |
EP2797449B1 (en) * | 2011-12-30 | 2019-08-07 | Philip Morris Products S.a.s. | Smoking article with front-plug and aerosol-forming substrate and method |
WO2020089068A1 (en) * | 2018-10-29 | 2020-05-07 | Nerudia Limited | Smoking substitute consumable |
US10668058B2 (en) | 2007-03-30 | 2020-06-02 | Philip Morris Products S.A. | Device and method for delivery of a medicament |
US20210112855A1 (en) * | 2018-05-17 | 2021-04-22 | Toa Industry Co., Ltd. | Aroma cartridge |
US11140916B2 (en) | 2012-02-13 | 2021-10-12 | Philip Morris Products S.A. | Aerosol-generating article having an aerosol-cooling element |
US11272731B2 (en) | 2011-12-30 | 2022-03-15 | Philip Morris Products S.A. | Aerosol-generating article for use with an aerosol-generating device |
US11278052B2 (en) | 2012-06-21 | 2022-03-22 | Philip Morris Products S.A. | Smoking article for use with an internal heating element |
US11571017B2 (en) | 2012-05-31 | 2023-02-07 | Philip Morris Products S.A. | Flavoured rods for use in aerosol-generating articles |
US11576426B2 (en) | 2017-08-01 | 2023-02-14 | British American Tobacco (Investments) Limited | Modular tobacco industry product |
US11582998B2 (en) | 2011-12-30 | 2023-02-21 | Philip Morris Products S.A. | Smoking article with front-plug and method |
Families Citing this family (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
AU2002300072B2 (en) * | 1998-03-03 | 2005-05-19 | Brown & Williamson Tobacco Corporation | Aerosol Delivery Smoking Article |
WO2013183761A1 (en) * | 2012-06-08 | 2013-12-12 | 日本たばこ産業株式会社 | Flavor-suctioning implement |
CN109567268B (en) * | 2018-12-26 | 2021-10-01 | 广东中烟工业有限责任公司 | Multilayer low-temperature cigarette and preparation method thereof |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3713451A (en) * | 1970-09-11 | 1973-01-30 | L Bromberg | Article for smoking |
US4340072A (en) * | 1979-11-16 | 1982-07-20 | Imperial Group Limited | Smokeable device |
US4898191A (en) * | 1988-12-09 | 1990-02-06 | Brown & Williamson Tobacco Corporation | Smoking device |
US4917121A (en) * | 1988-12-09 | 1990-04-17 | Brown & Williamson Tobacco Corporation | Smoking article |
Family Cites Families (5)
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---|---|---|---|---|
ATE19462T1 (en) * | 1981-06-10 | 1986-05-15 | Baumgartner Papiers Sa | METHOD OF FLAVORING TOBACCO SMOKE, CIGARETTE PLUG FOR CARRYING OUT THE METHOD AND USE OF THE METHOD. |
US4662384A (en) * | 1982-06-29 | 1987-05-05 | British-American Tobacco Company Limited | Smoking articles |
US4793365A (en) * | 1984-09-14 | 1988-12-27 | R. J. Reynolds Tobacco Company | Smoking article |
US5020548A (en) * | 1985-08-26 | 1991-06-04 | R. J. Reynolds Tobacco Company | Smoking article with improved fuel element |
US4903714A (en) * | 1987-08-25 | 1990-02-27 | R. J. Reynolds Tobacco Company | Smoking article with improved mouthend piece |
-
1990
- 1990-08-17 GB GB909018131A patent/GB9018131D0/en active Pending
-
1991
- 1991-08-14 IE IE289091A patent/IE74219B1/en not_active IP Right Cessation
- 1991-08-14 JP JP3228750A patent/JP3012714B2/en not_active Expired - Lifetime
- 1991-08-15 DK DK91307543.8T patent/DK0471581T3/en active
- 1991-08-15 DE DE69115383T patent/DE69115383T2/en not_active Expired - Lifetime
- 1991-08-15 ES ES91307543T patent/ES2082930T3/en not_active Expired - Lifetime
- 1991-08-15 EP EP91307543A patent/EP0471581B1/en not_active Expired - Lifetime
- 1991-08-16 NZ NZ239440A patent/NZ239440A/en not_active IP Right Cessation
- 1991-08-16 ZA ZA916492A patent/ZA916492B/en unknown
- 1991-08-16 AU AU82536/91A patent/AU653163B2/en not_active Expired
- 1991-08-16 CA CA002049364A patent/CA2049364C/en not_active Expired - Lifetime
- 1991-08-17 MY MYPI91001492A patent/MY112865A/en unknown
-
1996
- 1996-02-07 GR GR960400316T patent/GR3018910T3/en unknown
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3713451A (en) * | 1970-09-11 | 1973-01-30 | L Bromberg | Article for smoking |
US4340072A (en) * | 1979-11-16 | 1982-07-20 | Imperial Group Limited | Smokeable device |
US4898191A (en) * | 1988-12-09 | 1990-02-06 | Brown & Williamson Tobacco Corporation | Smoking device |
US4917121A (en) * | 1988-12-09 | 1990-04-17 | Brown & Williamson Tobacco Corporation | Smoking article |
Cited By (40)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5643245A (en) * | 1991-10-01 | 1997-07-01 | The Procter & Gamble Company | Absorbent article having tucked flaps |
WO1996003060A1 (en) * | 1994-07-28 | 1996-02-08 | Lorillard Tobacco Company | Hollow smokable article |
CN100559977C (en) * | 2003-02-14 | 2009-11-18 | 菲利普莫里斯生产公司 | Cigarette with porous heat transfer tube |
WO2007093852A2 (en) * | 2005-12-29 | 2007-08-23 | Philip Morris Products S.A. | Smoking article with improved delivery profile |
WO2007093852A3 (en) * | 2005-12-29 | 2008-05-29 | Philip Morris Prod | Smoking article with improved delivery profile |
US7987856B2 (en) | 2005-12-29 | 2011-08-02 | Philip Morris Usa Inc. | Smoking article with bypass channel |
US8240315B2 (en) * | 2005-12-29 | 2012-08-14 | Philip Morris Usa Inc. | Smoking article with improved delivery profile |
US9060546B2 (en) | 2006-03-28 | 2015-06-23 | Philip Morris Usa Inc. | Smoking article with a restrictor |
US7878963B2 (en) | 2006-03-28 | 2011-02-01 | Philip Morris Usa Inc. | Smoking article with a restrictor |
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Also Published As
Publication number | Publication date |
---|---|
JP3012714B2 (en) | 2000-02-28 |
ES2082930T3 (en) | 1996-04-01 |
IE74219B1 (en) | 1997-07-16 |
DE69115383D1 (en) | 1996-01-25 |
AU8253691A (en) | 1992-02-20 |
CA2049364A1 (en) | 1992-02-18 |
DE69115383T2 (en) | 1996-07-04 |
MY112865A (en) | 2001-10-31 |
GB9018131D0 (en) | 1990-10-03 |
CA2049364C (en) | 1997-07-08 |
IE912890A1 (en) | 1992-02-26 |
GR3018910T3 (en) | 1996-05-31 |
EP0471581B1 (en) | 1995-12-13 |
DK0471581T3 (en) | 1996-03-18 |
JPH04229166A (en) | 1992-08-18 |
AU653163B2 (en) | 1994-09-22 |
ZA916492B (en) | 1992-04-29 |
NZ239440A (en) | 1994-11-25 |
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