[go: up one dir, main page]
More Web Proxy on the site http://driver.im/

EP0250881B1 - Procédé pour déposer un matériau fluide sur la face interne d'un corps creux et dispositif pour la mise en oeuvre du procédé - Google Patents

Procédé pour déposer un matériau fluide sur la face interne d'un corps creux et dispositif pour la mise en oeuvre du procédé Download PDF

Info

Publication number
EP0250881B1
EP0250881B1 EP87107775A EP87107775A EP0250881B1 EP 0250881 B1 EP0250881 B1 EP 0250881B1 EP 87107775 A EP87107775 A EP 87107775A EP 87107775 A EP87107775 A EP 87107775A EP 0250881 B1 EP0250881 B1 EP 0250881B1
Authority
EP
European Patent Office
Prior art keywords
spin
carrier gas
cavity
gas flow
passage
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.)
Expired - Lifetime
Application number
EP87107775A
Other languages
German (de)
English (en)
Other versions
EP0250881A1 (fr
Inventor
Beat Eckert
Guido Huber
Norbert Richle
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Lonza AG
Original Assignee
Lonza AG
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Lonza AG filed Critical Lonza AG
Publication of EP0250881A1 publication Critical patent/EP0250881A1/fr
Application granted granted Critical
Publication of EP0250881B1 publication Critical patent/EP0250881B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Images

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B45/00—Devices for surface or other treatment of work, specially combined with or arranged in, or specially adapted for use in connection with, metal-rolling mills
    • B21B45/04—Devices for surface or other treatment of work, specially combined with or arranged in, or specially adapted for use in connection with, metal-rolling mills for de-scaling, e.g. by brushing
    • C—CHEMISTRY; METALLURGY
    • C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
    • C23G—CLEANING OR DE-GREASING OF METALLIC MATERIAL BY CHEMICAL METHODS OTHER THAN ELECTROLYSIS
    • C23G3/00—Apparatus for cleaning or pickling metallic material
    • C23G3/04—Apparatus for cleaning or pickling metallic material for cleaning pipes

Definitions

  • the invention relates to a method for applying a flowable substance to the inner surface of a hollow body and a device for carrying out the method.
  • a method according to the preamble of claim 1 for descaling the inner surface of glowing blanks in the production of seamless tubes and a device according to the preamble of claim 5 for carrying out this method are known (EP-A-0 133 937).
  • the carrier gas stream loaded with the substance namely a descaling agent
  • the swirl brings a more even distribution of the substance in the carrier gas and the centrifugal force that occurs as a result of the swirl brings a larger part of the substance onto the inner surface of the hollow body without following gravity.
  • the loaded carrier gas stream with the swirl must first force the air at rest in the cavity through and out of the cavity. Part of its swirl is transferred to this air and is lost for the application of the substance to the inner surface of the hollow body.
  • the loaded carrier gas stream flows through the cavity, its velocity and swirl near the inner surface are less than in the center of the cavity cross-section. The flow becomes laminar due to the friction on the inner surface, especially when it is rough, e.g. in the case of a bowl, is covered with a layer of scale. Overall, only part of the swirl imparted to the loaded carrier gas tom is effective for applying the substance to the inner surface.
  • the invention seeks to remedy this.
  • the invention as characterized in the claims, solves the problem of improving the method and the device of the type mentioned in order to transfer a larger part of the substance with which the carrier gas stream to which the swirl was given is loaded onto the inner surface bring the hollow body.
  • twist is to be understood in the sense of a screwing movement or a helical movement.
  • the advantages achieved by the invention are essentially to be seen in the fact that the loaded carrier gas stream with the swirl when entering the cavity does not encounter still air, but rather the additional, unloaded gas stream which is in the same direction and with a swirl of the same direction of rotation how the laden carrier gas stream is already flowing through the cavity.
  • the loaded carrier stream acts immediately at full speed and with all the twist given to it for applying the substance to the inner surface, from one end of the cavity to the other.
  • the additional gas flow is continued for at least part of the duration of the loaded carrier gas stream, the loss of speed and swirl caused by friction of the loaded carrier gas stream on the inner surface can be canceled out by the action of the additional gas stream, so that overall a swirl to the effect comes, which can be the swirl given to the carrier gas flow, depending on the speed and swirl of the additional gas flow, but also larger (or smaller) than that.
  • the additional gas flow acts only near the inner surface of the cavity.
  • Both the carrier gas and the additional gas which is not loaded with the substance can, depending on the type of substance, the material of the hollow body or the application of the method or use of the device, air or another, in particular inert gas or a gas mixture and do not have to be the same, especially since one is first with the substance and only later together with the substance and the other first alone and possibly later together with the carrier gas-substance mixture with the (in the case of a glowing bob) the inner surface of the cavity comes into contact.
  • the other gas could also be or contain a liquid in the gaseous phase or an aerosol.
  • the flowable substance can be a semi-liquid, a paste, a molten or particulate material, such as powder, granular material, short fibers or chips, a liquid or a mixture of such substances.
  • the gas flow leaving the cavity and containing the carrier gas and the additional gas and a remainder of the substance can be sucked off to support the flow in the cavity, the rest of the substance, if it consists of fine particles, can be separated in a separator for further use .
  • the invention is explained in more detail below with reference to a drawing which represents only one embodiment.
  • the single figure shows a perspective view of a partially sectioned device for carrying out the method for applying a flowable substance to the inner surface of a hollow body, the cavity of which is continuous and at least approximately cylindrical.
  • This device is particularly suitable for the application of the method for applying a flowable descaling agent to the inner surface of blanks in the manufacture of seamless pipes.
  • Its essential part in connection with the invention is a passage element 1 for a carrier gas stream loaded with the substance.
  • guide vanes 3 are arranged, which are used for a swirl sensor form the loaded carrier gas stream.
  • the passage element 1 is provided with a feed device, in the drawing with nozzles 4 for an additional gas not loaded with the substance, the outflow directions of which are arranged obliquely to the axis of the passage space 2 in order to give this gas a twist with the direction of rotation 5 of the to issue the guide vanes 3 formed swirl generator. In the drawing, this is a right-hand twist.
  • the nozzles 4 can be designed as Laval nozzles.
  • the feed line 7 for the loaded carrier gas is together with the passage member 1 by a displacement unit 8 with a thrust path of e.g. 40 cm and a flexible sleeve 9 guided, which make it possible to bring the passage member 1 to the cavity, center it with respect to this and withdraw it again.
  • the passage member 1 is conical as a diffuser. For smaller diameter cavities, however, a cylindrical design may be appropriate. Between the end (mouthpiece 16) of the feed line 7 and the entrance of the passage element 1 there is an intermediate space 12, which is open on the circumference, e.g. 15-35, preferably 20-30 mm in length, as a result of which the effect known in jet apparatuses (jet pumps, atomizers) is achieved, which causes a better distribution of the substance in the carrier gas stream leaving the passage element. If the access of air to the laden carrier gas stream is undesirable, an annular space with gas supply which is closed to the outside and surrounds the intermediate space can be provided. Lines 13 leading to the nozzles 4 run along the intermediate space 12 and are connected to a cylinder 14 enclosing part of the supply line 7 and having a connection 15 for the supply of the additional gas.
  • a displacer 18 which is flared conically in the direction of flow, in the case of the diffuser a diffuser cone which is hollow and open at both ends in order to support the above-mentioned effect, which is known in jet devices.
  • the passage element 1 or the diffuser has a double jacket 20 with a feed line 21 and a discharge line for cooling water, not shown, and the displacement body 18 or diffuser cone is hollow in order to keep the heating by heat radiation from the glowing cap small. For this reason, the guide vanes 3 are also connected to the cooled jacket in a heat-conducting manner, e.g. welded on.
  • the guide vanes 3 are groove-like in cross-section and curved in their longitudinal direction, so that the hollow side of each of these curvatures lies in the direction of rotation 5 of the swirl caused.
  • the radius of curvature of the channel profile increases in the direction of flow, corresponding to the increase in the diameter of the conical diffuser.
  • the guide vanes can be helical (without the curvatures).
  • the guide vanes 3 can deviate from the design shown at the outlet of the passage element e.g. 5 cm protruding ends (not shown), the width of which decreases in the flow direction in such a way that the guide vane ring is tapered in the area of these ends in order to grip the hollow body in its cavity when approaching the passage element 1 and to access the hollow body in relation to it center.
  • the nozzles 4 for supplying the additional gas not loaded with the substance are arranged at the exit of the passage element 1 at the end of a guide vane 3 so skewed to the axis 6 of the passage space 2 that the swirl angle (the one tangent to the helix corresponding to the swirl) with the helix axis) is greater (the helix angle of this helix is therefore smaller) than the helix angle (or helix angle) of the helix of the carrier gas stream loaded with the substance.
  • a conically enlarged passage element In the case of a conically enlarged passage element (diffuser 1), three to six, preferably four guide vanes can be provided, and in the case of a cylindrical passage element four to twelve, preferably six to ten, guide vanes can be provided.
  • a nozzle 4 is expediently arranged at the end of every second guide vane 3.
  • the angle at the tip of the cone of the displacer (or diffuser cone) 18 can be 35 degrees for a cavity diameter of 15-20 cm, 30 degrees for smaller cavity diameters and 40 degrees for larger cavity diameters.
  • the angle at the tip of its cone can be equal to that of the displacer body 18.
  • the inside diameter of the mouthpiece 16 at the end of the feed line 7 is expediently 10 mm for the loaded carrier gas stream if 100-150 grams of powdered descaling agent are used per slug, or up to 30 mm if approx. 400 each Grams of descaling agent can be used.
  • passage elements 1 of different sizes also with different swirl angles, in particular conical passage elements for larger diameters and cylindrical ones for small diameters, can optionally be attached individually to the end piece of the pipeline 7 for the laden carrier gas stream.
  • the glowing blob is brought to the device so that the slug cavity is sufficiently coaxial passage space of the passage member. Then the device is brought close to the cavity and, if necessary, centered by actuating the displacement unit 8, the sleeve 9 giving way and, if appropriate, the (not shown) tapered blade ring end being guided into the cavity as a centering means. Then, air not loaded with the descaling agent is first supplied to the connection 14 at a pressure of, for example, 6 bar and blown through the nozzles 4 into the cavity.

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Metallurgy (AREA)
  • General Chemical & Material Sciences (AREA)
  • Materials Engineering (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Organic Chemistry (AREA)
  • Application Of Or Painting With Fluid Materials (AREA)
  • Nozzles (AREA)
  • Feeding, Discharge, Calcimining, Fusing, And Gas-Generation Devices (AREA)
  • Coating Apparatus (AREA)
  • Powder Metallurgy (AREA)

Claims (12)

1. Procédé pour appliquer une matière coulante sur la surface intérieure d'un corps creux présentant un espace creux traversant, au moins approximativement cylindrique, dans lequel un flux de gaz - porteur chargé de la matière est guidé axialement à travers l'espace creux après communication d'un mouvement giratoire, caractérisé en ce qu'un flux de gaz additionnel qui n'est pas chargé de la matière est guidé axialement à travers l'espace creux, avant la durée du flux de gaz porteur soumis au mouvement giratoire ou également au moins pendant une partie de cette durée, selon un mouvement giratoire de même orientation que le mouvement giratoire du flux de gaz porteur chargé.
2. Procédé selon la revendication 1, caractérisé en ce que le flux de gaz additionnel est guidé à travers l'espace creux selon un mouvement giratoire dont l'angle de giration est plus petit que celui du gaz porteur chargé.
3. Procédé selon la revendication 1 ou 2, caractérisé en ce que le gaz additionnel est guidé dans l'espace creux à des emplacements répartis de façon uniforme sur la périphérie de l'espace creux et pour s'écouler à travers l'espace creux en plusieurs flux partiels de tracé hélicoïdal sur la surface intérieure.
4. Dispositif pour la mise en oeuvre du procédé selon l'une des revendications 1 à 3, comportant un organe d'admission (1) pour le flux de gaz porteur chargé en matière, dans l'espace d'admission (2) duquel est disposé un dispositif (3) de mise en giration, caractérisé par un dispositif (4) d'amenée du gaz additionnel au gaz porteur chargé dans la direction de ce dernier selon un mouvement giratoire dont le sens de giration est de même orientation que celui du flux de gaz porteur chargé.
5. Dispositif selon la revendication 4, caractérisé en ce que l'organe d'admission (1) présente une distance (12) depuis une pièce de débouché de sortie d'une conduite d'amenée (7) du gaz porteur chargé.
6. Dispositif selon la revendication 4 ou 5, caractérisé par des ailettes de guidage (3) constituant le dispositif de mise en rotation du flux de gaz porteur chargé, leur tracé présentant un angle de giration par rapport à l'axe (6) de l'espace d'admission, qui sont incurvées en forme de rigoles, avec un rayon de courbure croissant dans la direction de l'écoulement, le côté creux de la rigole étant en direction du sens de rotation (5) du mouvement giratoire, et/ou dans la direction longitudinale, de sorte que l'angle de giration augmente dans la direction de l'écoulement.
7. Dispositif selon l'une des revendications 4 à 6, caractérisé en ce que les ailettes de guidage constituant le dispositif de mise en giration du flux de gaz porteur chargé présentent des extrémités en saillie depuis la sortie de l'organe d'admission (1), dont la largeur diminue dans la direction de l'admission de telle sorte que la couronne d'ailettes de guidage se rétrécit coniquement dans la zone de ses extrémités pour servir de moyen de centrage pénétrant dans l'espace creux pour centrer l'organe d'admission par rapport à l'espace creux.
8. Dispositif selon l'une des revendications 4 à 7, caractérisé en ce que l'espace d'admission (2) de l'organe d'admission (1) est cylindrique ou au moins approximativement conique pour créer un diffuseur dans la direction de l'admission.
9. Dispositif selon l'une des revendications 4 à 8, caractérisé en ce qu'un corps de déplacement creux, ouvert aux deux extrémités, s'élargissant coniquement dans la direction d'admission, ou cône diffuseur, est disposé dans l'espace d'admission (2) de l'organe d'admission (1).
10. Dispositif selon l'une des revendications 4 à 9, caractérisé en ce que l'organe d'admission (1) possède une enveloppe à double paroi (20) destinée à un milieu réfrigérant ou à un agent caloporteur.
11. Dispositif selon l'une des revendications 4 à 10, caractérisé en ce que, pour l'amenée du gaz additionnel non chargé en matière, plusieurs tuyères (4), présentant le mouvement giratoire de celui-ci, sont de façon appropriée fixées sur la sortie de l'organe d'admission en étant réparties uniformément sur sa périphérie, chacune d'elles étant fixée à l'une des multiples ailettes de guidage (3) qui constituent le dispositif de mise en giration du gaz porteur char- gé.
12. Dispositif selon la revendication 11, caractérisé en ce que les tuyères sont des tuyères de Laval.
EP87107775A 1986-07-03 1987-05-29 Procédé pour déposer un matériau fluide sur la face interne d'un corps creux et dispositif pour la mise en oeuvre du procédé Expired - Lifetime EP0250881B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CH2682/86 1986-07-03
CH2682/86A CH668717A5 (de) 1986-07-03 1986-07-03 Verfahren zum aufbringen eines fliessfaehigen stoffes auf die innenflaeche eines hohlkoerpers und einrichtung zur durchfuehrung des verfahrens.

Publications (2)

Publication Number Publication Date
EP0250881A1 EP0250881A1 (fr) 1988-01-07
EP0250881B1 true EP0250881B1 (fr) 1990-05-09

Family

ID=4239209

Family Applications (1)

Application Number Title Priority Date Filing Date
EP87107775A Expired - Lifetime EP0250881B1 (fr) 1986-07-03 1987-05-29 Procédé pour déposer un matériau fluide sur la face interne d'un corps creux et dispositif pour la mise en oeuvre du procédé

Country Status (9)

Country Link
US (1) US4790263A (fr)
EP (1) EP0250881B1 (fr)
JP (1) JPH0771689B2 (fr)
CA (1) CA1261684A (fr)
CH (1) CH668717A5 (fr)
DE (1) DE3762632D1 (fr)
ES (1) ES2015918B3 (fr)
MX (1) MX170547B (fr)
SU (1) SU1620042A3 (fr)

Families Citing this family (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH674164A5 (fr) * 1987-09-29 1990-05-15 Lonza Ag
CH674096A5 (fr) * 1988-01-19 1990-04-30 Lonza Ag
CH674477A5 (fr) * 1988-03-30 1990-06-15 Lonza Ag
US5099667A (en) * 1989-06-16 1992-03-31 Lonza Ltd. System for suspending and applying solid lubricants to tools or work pieces
DE59102889D1 (de) * 1990-03-26 1994-10-20 Lonza Ag Verfahren und Einrichtung zum intervallweisen Versprühen einer Schmiermittel-Suspension.
RU2179077C1 (ru) * 2000-05-12 2002-02-10 Поволжский научно-исследовательский институт эколого-мелиоративных технологий Устройство для нанесения антикоррозионного покрытия на внутренние поверхности трубопроводов
RU2232645C1 (ru) * 2002-12-15 2004-07-20 Салдаев Александр Макарович Устройство для нанесения антикоррозионного материала на внутреннюю поверхность трубопровода
RU2272682C2 (ru) * 2003-09-04 2006-03-27 Алексей Алексеевич Аюков Приводная центробежная разбрызгивающая головка
RU2272681C2 (ru) * 2003-09-04 2006-03-27 Алексей Алексеевич Аюков Приводная центробежная разбрызгивающая головка
RU2283189C1 (ru) * 2005-02-22 2006-09-10 Государственное научное учреждение Поволжский научно-исследовательский институт эколого-мелиоративных технологий Российской академии сельскохозяйственных наук Устройство для нанесения антикоррозионной изоляции на внутреннюю поверхность трубопровода
RU2510714C1 (ru) * 2012-10-24 2014-04-10 Открытое акционерное общество "Электростальский завод тяжелого машиностроения" Способ винтовой прокатки гильз
CN112221346B (zh) * 2020-10-30 2025-03-25 中国大唐集团科学技术研究院有限公司华东电力试验研究院 一种scr脱硝系统的喷氨格栅
CN113663878B (zh) * 2021-09-02 2025-01-14 襄阳蓬达高新科技有限公司 一种多工作角度的涂敷头机构

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US679756A (en) * 1901-05-23 1901-08-06 William Bonbright Kennedy Steam and hot-air flue-cleaner.
US998762A (en) * 1911-05-19 1911-07-25 Cement Appliances Company Apparatus for combining comminuted solids and liquid.
US4090666A (en) * 1976-05-19 1978-05-23 Coors Container Company Gun for tribo charging powder
US4055025A (en) * 1976-11-22 1977-10-25 Union Carbide Corporation Apparatus for improved cleaning of pipeline inlets
GB2123917B (en) * 1982-04-30 1986-02-12 Hakko Co Lining underground pipes
US4452169A (en) * 1982-09-24 1984-06-05 Shinich Matsuda Reviving apparatus for fluid passages
CH655516B (fr) * 1983-08-17 1986-04-30
EP0172366B1 (fr) * 1984-07-23 1988-04-06 Lonza Ag Méthode et dispositif pour le décapage de pièces de travail pour la fabrication de tuyaux
US4668534A (en) * 1986-01-21 1987-05-26 Ben E. Meyers Method and apparatus for applying fusion bonded powder coatings to the internal diameter of tubular goods

Also Published As

Publication number Publication date
CH668717A5 (de) 1989-01-31
MX170547B (es) 1993-08-31
EP0250881A1 (fr) 1988-01-07
SU1620042A3 (ru) 1991-01-07
JPS6313614A (ja) 1988-01-20
ES2015918B3 (es) 1990-09-16
US4790263A (en) 1988-12-13
JPH0771689B2 (ja) 1995-08-02
CA1261684A (fr) 1989-09-26
DE3762632D1 (de) 1990-06-13

Similar Documents

Publication Publication Date Title
DE2427693C2 (de) Vorrichtung zum innigen Vermischen eines Gases mit einer Flüssigkeit
EP0250881B1 (fr) Procédé pour déposer un matériau fluide sur la face interne d'un corps creux et dispositif pour la mise en oeuvre du procédé
DE2656151C2 (de) Vorrichtung zum Abtrennen von Festkörperverunreinigungen aus einem Gasstrom
DE3420318C2 (fr)
DE3100002A1 (de) Pulverspritzgeraet
EP0076472A1 (fr) Dispositif pour la distribution uniforme d'un courant d'une matière en vrac
WO2011124686A1 (fr) Système de pulvérisation et procédé pour pulvériser un fluide secondaire dans un fluide primaire
DE2751968C3 (de) Injektorkopf zum Einleiten eines mit Schleifmittel beladenen Gasstromes in eine Pipeline
DE68926396T2 (de) Plasmabrenner für übertragenen lichtbogen
DE2256590A1 (de) Duese zur verwendung in heissfluessigkeitsstrahlpumpen und damit verbundenes verfahren
DE3490020C1 (de) Venturiwascher fuer staubbeladene Gase
DE2928698A1 (de) Vorrichtung zur erzeugung eines mit schleifmittelteilchen versetzten fluessigkeitsstrahles (dispenser)
DE2727362A1 (de) Kuehlstrecke zum abkuehlen von stabstahl
EP0281630A1 (fr) Dispositif de tourbillonnement pour element de separation de contacts
DE2418854A1 (de) Vorrichtung zum aufbringen einer fluessigkeit
DE3117715C2 (de) Pulverbeschichtungsvorrichtung
DE4312994C2 (de) Vorrichtung zur Verspritzung von Suspensionen, insbesondere Mörteln
CH631093A5 (de) Kuehlmittelleit- und walzgutfuehrungseinrichtung fuer die intermittierende kuehlung von walzgut.
DE60117505T2 (de) Vorrichtung zur Beschichtung von optischen Fasern
DE3043246C2 (de) Verfahren und Vorrichtung zum Überziehen der Innenfläche eines Rohres
EP0309945B1 (fr) Dispositif pour appliquer un agent de décalaminage sur la surface intérieure d'une loupe
DE1932706C3 (de) Texturiervorrichtung
EP1182008B1 (fr) Dispositif de projection d'abrasif
DE3243230C2 (de) Drallkörperdüse für Spritzanlagen
DE2304298A1 (de) Vorrichtung zum benetzen pulverfoermiger bis koerniger oder faseriger schuettgueter mit einer fluessigkeit

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

AK Designated contracting states

Kind code of ref document: A1

Designated state(s): BE CH DE ES FR GB IT LI LU SE

17P Request for examination filed

Effective date: 19880609

17Q First examination report despatched

Effective date: 19890804

GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

AK Designated contracting states

Kind code of ref document: B1

Designated state(s): BE CH DE ES FR GB IT LI LU SE

REF Corresponds to:

Ref document number: 3762632

Country of ref document: DE

Date of ref document: 19900613

ITF It: translation for a ep patent filed
GBT Gb: translation of ep patent filed (gb section 77(6)(a)/1977)
ET Fr: translation filed
PLBE No opposition filed within time limit

Free format text: ORIGINAL CODE: 0009261

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT

26N No opposition filed
ITTA It: last paid annual fee
EPTA Lu: last paid annual fee
EAL Se: european patent in force in sweden

Ref document number: 87107775.6

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: GB

Payment date: 19950418

Year of fee payment: 9

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: LU

Payment date: 19950501

Year of fee payment: 9

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: FR

Payment date: 19950503

Year of fee payment: 9

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: BE

Payment date: 19950505

Year of fee payment: 9

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: SE

Payment date: 19950510

Year of fee payment: 9

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: CH

Payment date: 19950814

Year of fee payment: 9

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: LU

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 19960529

Ref country code: GB

Effective date: 19960529

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: SE

Effective date: 19960530

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: LI

Effective date: 19960531

Ref country code: CH

Effective date: 19960531

Ref country code: BE

Effective date: 19960531

BERE Be: lapsed

Owner name: LONZA A.G.

Effective date: 19960531

REG Reference to a national code

Ref country code: CH

Ref legal event code: PL

GBPC Gb: european patent ceased through non-payment of renewal fee

Effective date: 19960529

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: FR

Effective date: 19970131

EUG Se: european patent has lapsed

Ref document number: 87107775.6

REG Reference to a national code

Ref country code: FR

Ref legal event code: ST

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: ES

Payment date: 19970520

Year of fee payment: 11

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: DE

Payment date: 19970623

Year of fee payment: 11

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: ES

Free format text: LAPSE BECAUSE OF EXPIRATION OF PROTECTION

Effective date: 19980530

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: DE

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 19990302

REG Reference to a national code

Ref country code: ES

Ref legal event code: FD2A

Effective date: 20000201

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: IT

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES;WARNING: LAPSES OF ITALIAN PATENTS WITH EFFECTIVE DATE BEFORE 2007 MAY HAVE OCCURRED AT ANY TIME BEFORE 2007. THE CORRECT EFFECTIVE DATE MAY BE DIFFERENT FROM THE ONE RECORDED.

Effective date: 20050529