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

WO1993017881A1 - Process for tarsia-working of marble, granite, etc. - Google Patents

Process for tarsia-working of marble, granite, etc. Download PDF

Info

Publication number
WO1993017881A1
WO1993017881A1 PCT/IT1992/000126 IT9200126W WO9317881A1 WO 1993017881 A1 WO1993017881 A1 WO 1993017881A1 IT 9200126 W IT9200126 W IT 9200126W WO 9317881 A1 WO9317881 A1 WO 9317881A1
Authority
WO
WIPO (PCT)
Prior art keywords
tarsia
grooves
process according
notches
stone
Prior art date
Application number
PCT/IT1992/000126
Other languages
French (fr)
Inventor
Emilio Piccoli
Original Assignee
Alpimarmo A. Piccoli Di Piccoli Nereo Ec. S.N.C.
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 Alpimarmo A. Piccoli Di Piccoli Nereo Ec. S.N.C. filed Critical Alpimarmo A. Piccoli Di Piccoli Nereo Ec. S.N.C.
Priority to AU29248/92A priority Critical patent/AU2924892A/en
Priority to EP92923340A priority patent/EP0630327A1/en
Priority to JP5515515A priority patent/JPH07503423A/en
Publication of WO1993017881A1 publication Critical patent/WO1993017881A1/en

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B44—DECORATIVE ARTS
    • B44C—PRODUCING DECORATIVE EFFECTS; MOSAICS; TARSIA WORK; PAPERHANGING
    • B44C1/00—Processes, not specifically provided for elsewhere, for producing decorative surface effects
    • B44C1/26—Inlaying with ornamental structures, e.g. niello work, tarsia work
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B28—WORKING CEMENT, CLAY, OR STONE
    • B28D—WORKING STONE OR STONE-LIKE MATERIALS
    • B28D1/00—Working stone or stone-like materials, e.g. brick, concrete or glass, not provided for elsewhere; Machines, devices, tools therefor
    • B28D1/30—Working stone or stone-like materials, e.g. brick, concrete or glass, not provided for elsewhere; Machines, devices, tools therefor to form contours, i.e. curved surfaces, irrespective of the method of working used
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B44—DECORATIVE ARTS
    • B44B—MACHINES, APPARATUS OR TOOLS FOR ARTISTIC WORK, e.g. FOR SCULPTURING, GUILLOCHING, CARVING, BRANDING, INLAYING
    • B44B3/00—Artist's machines or apparatus equipped with tools or work holders moving or able to be controlled substantially two- dimensionally for carving, engraving, or guilloching shallow ornamenting or markings
    • B44B3/009—Artist's machines or apparatus equipped with tools or work holders moving or able to be controlled substantially two- dimensionally for carving, engraving, or guilloching shallow ornamenting or markings using a computer control means
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B44—DECORATIVE ARTS
    • B44C—PRODUCING DECORATIVE EFFECTS; MOSAICS; TARSIA WORK; PAPERHANGING
    • B44C3/00—Processes, not specifically provided for elsewhere, for producing ornamental structures
    • B44C3/10—Producing and filling perforations, e.g. tarsia plates

Definitions

  • the present invention relates to a process for tarsia-working of materials such as marble, stone or grani te.
  • the present invention relates to a process allowing a tarsia decoration of any shape and/or size to be obtained on blocks, panels or slabs made of stone-like material in a quick and economical way, said process being able to be continuously reproduced on industrial scale.
  • the invention relates to a material such as marble, stone or granite provided with a tarsia decoration obtained by means of such process.
  • the invention may be mainly applied in the field of marble, stone, granite and similar materials workin industry.
  • Several methods are known in the art for obtaining tarsia decorations on a surface.
  • the decoration supporting surface is hand-milled in order to obtain grooves and/or notches suitable for housing the elements forming the decoration, which are individually obtained by manually cutting and milling small material blocks.
  • Each of the elements forming the decoration is then laid down on the supporting surface and glued to the lat ter .
  • the decorated surface is further treated, by means of polishing, sandblasting operations etc..
  • the slab to be decorated is firstly worked by means of an automatic machine of a type which is commonly
  • water-jet machine which deeply digs the stone-like material by means of a very thin water jet which is mixed with suitable abrasive powders and which is sent at a very high pressure, until an element having a predetermined shape may be detached from the slab.
  • the decorated slab undergoes suitable treatments, such as smoothing, polishing etc..
  • This method also involves several drawbacks and disadvantages in terms of time and costs, which are essentially due to the necessity of individually laying
  • the present invention aims to obviate to the disadvantages and drawbacks which are typical of the background art, and to provide, thus, for a a process
  • the invention relates to tarsia- 10 decorated products made of a stone-like material which are obtained by means of such process.
  • the process according to the invention comprises a first step in which the material which is intended to form the support for the tarsia decoration is worked by 15 means of a digitally controlled (DC) milling machine which is programmed in such a way as to obtain, by means of diamond-tools acting on the surface to be decorated, areas which reproduce, by means of grooves and notches, the decoration pattern.
  • a slab constituted by the material forming the decoration is then worked by means of a DC milling machine in order to form on the slab, in relief, the decoration pattern.
  • FIG. 1 shows a plan view of a tarsia-worked tile made of a stone-like material
  • FIG. 1 shows a section along line A-A of fig. 1;
  • - figure 3 shows, in a side section, a step of the working process according to the invention
  • - figure 4 shows, in a side section, a following step of the process according to the invention.
  • reference sign 10 generally indicates a tarsia worked tile made of a styone-like material, e.g. marble, stone, granite or similar material .
  • Said tile 10 essentially comprises a decoration 11 made of a stone-like material, which is inserted in suitable grooves or notches machined in a slab 12, also made of a stone-like material (see fig. 2).
  • tile 10 is obtained by means of the following process.
  • a first slab 12 is machined by means of a DC milling machine in order to obtaine, by means of diamond tools, a series of notches and/or grooves 14 reproducing the drawing of the decorative pattern.
  • a second slab 11 is machined by means of a DC milling machine in order to obtain, in relief, the decrorative pattern 13.
  • the sandwich formed by slabs 11, 12 is longitudinally cut along line C-C.
  • the resulting product is a tile formed by slab 12 and provided with a tarsia decoration constituted by the material of slab 11 (fig. 2)
  • a tarsia decoration constituted by the material of slab 11 (fig. 2)
  • the invention has previously been described with reference to a particular form of embodiment, in which the final product is constituted by a flat tile having a supporting base and a monochromatic tarsia decoration.
  • the invention is not limited to this form of embodiment, and it provides for several variants which fall within its scope.
  • the invention may be applied for the tarsia working of stone-like materials having any shape, e.g. blocks, tiles and others.
  • the invention may easily be carried out in order to obtain multicoloured tarsia-worked products: in fact, the process according to the invention may be repeated on different slabs of various materials, thereby obtaining, for instance, a first supporting slab provided with a series of notches suitable for accomodating the relief patterns carried by a second, a third and a fourth slabs which are superimposed one after the other in order to form a stratified product, the visible surface of which is provided with a multicoloured decorative tarsia pattern.
  • the invention is not limited to the production of elements which are tarsia-worked on a single plane: in fact, by using a DC machine having five working axles, any kind of tarsia decoration may be carried out, also on curved surfaces.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Mining & Mineral Resources (AREA)
  • General Engineering & Computer Science (AREA)
  • Processing Of Stones Or Stones Resemblance Materials (AREA)
  • Laminated Bodies (AREA)
  • Hinges (AREA)

Abstract

The process according to the invention comprises a first step in which the material which is intended to form the support (12) for a tarsia decoration is worked by means of a digitally controlled (DC) milling machine which is programmed in such a way as to obtain, by means of diamond-tools acting on the surface to be decorated, areas which reproduce, by means of grooves (14) and notches, a decoration pattern. A slab (11) constituted by the material forming the decoration is then worked by means of a DC milling machine in order to form on the slab, in relief, a decoration pattern. Said slab (11) is then placed on the material (12) to be decorated, in the grooves of which a suitable bonding agent is previously laid down, in such a way as the reliefs are embedded in said grooves. Then, the upper portion of such a sandwich is removed, normally by means of a longitudinal cut, thereby freeing the decorated material, which is successively smoothed and polished.

Description

PROCESS FOR TARSIA-WORKING OF MARBLE, GRANITE ETC.
* * * * * The present invention relates to a process for tarsia-working of materials such as marble, stone or grani te.
More particularly, the present invention relates to a process allowing a tarsia decoration of any shape and/or size to be obtained on blocks, panels or slabs made of stone-like material in a quick and economical way, said process being able to be continuously reproduced on industrial scale.
Furthermore, the invention relates to a material such as marble, stone or granite provided with a tarsia decoration obtained by means of such process.
The invention may be mainly applied in the field of marble, stone, granite and similar materials workin industry. Several methods are known in the art for obtaining tarsia decorations on a surface.
According to the traditional method for tarsia- working of stone-like materials, which is known since ancient times, the decoration supporting surface is hand-milled in order to obtain grooves and/or notches suitable for housing the elements forming the decoration, which are individually obtained by manually cutting and milling small material blocks.
Each of the elements forming the decoration is then laid down on the supporting surface and glued to the lat ter .
Finally, the decorated surface is further treated, by means of polishing, sandblasting operations etc..
This working method involves several disadvantages and drawbacks, since it is extremely dispersive in terms of time and costs which are needed for laying down the 5 decorated surface.
According to another method, which is mainly used for obtaining relatively thin tarsia-decorated slabs, the slab to be decorated is firstly worked by means of an automatic machine of a type which is commonly
- Q designated as "water-jet machine", which deeply digs the stone-like material by means of a very thin water jet which is mixed with suitable abrasive powders and which is sent at a very high pressure, until an element having a predetermined shape may be detached from the slab.
15 The process is continuously repeated for each slab and decoration element, and finally the elements are laid down on a suitable support and assembled on it like a mosaic by glueing the elements to the support by means of resins or bonding agents.
20 Finally, the decorated slab undergoes suitable treatments, such as smoothing, polishing etc..
This method also involves several drawbacks and disadvantages in terms of time and costs, which are essentially due to the necessity of individually laying
25 down with great accuracy the decorated elements on the supporting base, such as in mosaic-workings.
The present invention aims to obviate to the disadvantages and drawbacks which are typical of the background art, and to provide, thus, for a a process
30 for tarsia-working of stone-like materials such as marble, stone, granite and similar materials, said process being reliable and very simple to be carried out, and which allows tarsia-decorated products reproduceable on industrial scale to be obtained, thereby substantially reducing the production times which are necessary by means of the known methods. 5 This is achieved by means of a process having the features disclosed in the main claim.
The dependent claims disclose advantageous forms of embodiment of the invention.
Furthermore, the invention relates to tarsia- 10 decorated products made of a stone-like material which are obtained by means of such process.
The process according to the invention comprises a first step in which the material which is intended to form the support for the tarsia decoration is worked by 15 means of a digitally controlled (DC) milling machine which is programmed in such a way as to obtain, by means of diamond-tools acting on the surface to be decorated, areas which reproduce, by means of grooves and notches, the decoration pattern. 20 A slab constituted by the material forming the decoration is then worked by means of a DC milling machine in order to form on the slab, in relief, the decoration pattern.
Said slab is then placed on the material to be
25 decorated, in the grooves of which a suitable bonding agent is previously laid down, in such a way as the reliefs are embedded in said grooves. i Then, the upper portion of such a sandwich is removed, normaly by means of a longitudinal cut, thereby
<* 30 freeing the decorated material, which is successively smoothed and polished.
It is apparent that the process according to the invention may be carried out for any decorative pattern, in accordance with the program instruction which are input in the DC machine tool.
Other features and advantages of the invention will become apparent by reading the following description, of a form of embodiment of the invention, given as a non- limiting example, with the help of the figures illustrated in the attached sheet, in which:
- figure 1 shows a plan view of a tarsia-worked tile made of a stone-like material;
- figure 1 shows a section along line A-A of fig. 1;
- figure 3 shows, in a side section, a step of the working process according to the invention, and - figure 4 shows, in a side section, a following step of the process according to the invention.
In the figures, reference sign 10 generally indicates a tarsia worked tile made of a styone-like material, e.g. marble, stone, granite or similar material .
Said tile 10 essentially comprises a decoration 11 made of a stone-like material, which is inserted in suitable grooves or notches machined in a slab 12, also made of a stone-like material (see fig. 2).
According to the invention, tile 10 is obtained by means of the following process.
A first slab 12 is machined by means of a DC milling machine in order to obtaine, by means of diamond tools, a series of notches and/or grooves 14 reproducing the drawing of the decorative pattern.
Similarly, a second slab 11 is machined by means of a DC milling machine in order to obtain, in relief, the decrorative pattern 13.
Thereafter, a layer of suitable bonding agent or resin is laid down on notches 14, and slab 11 is fittingly placed on slab 12, in such a way that reliefs 13 are accomodated into grooves 14 (figs. 3 and 4); slab 11 undergoes a pressure F acting in the direction of slab 12.
Once the boding agent has completed its action, the sandwich formed by slabs 11, 12 is longitudinally cut along line C-C.
The resulting product is a tile formed by slab 12 and provided with a tarsia decoration constituted by the material of slab 11 (fig. 2) As it may remarked from the preceding description, the process according to the invention allows large quantities of products made of stone-like material and provided with tarsia decoration to be obtained in a very quick and continuously on industrial scale reproduceable way (thanks to the use of programmable DC machines).
The invention has previously been described with reference to a particular form of embodiment, in which the final product is constituted by a flat tile having a supporting base and a monochromatic tarsia decoration. However, the invention is not limited to this form of embodiment, and it provides for several variants which fall within its scope.
According to a first variant, the invention may be applied for the tarsia working of stone-like materials having any shape, e.g. blocks, tiles and others.
In fact, once the material to be decorated has been provided with the notches for acco odating the decoration, it suffices to place on that material a slab in which the decorative pattern is machined in relief and to longitudinally cut the assembly.
According to other forms of embodiment, the invention may easily be carried out in order to obtain multicoloured tarsia-worked products: in fact, the process according to the invention may be repeated on different slabs of various materials, thereby obtaining, for instance, a first supporting slab provided with a series of notches suitable for accomodating the relief patterns carried by a second, a third and a fourth slabs which are superimposed one after the other in order to form a stratified product, the visible surface of which is provided with a multicoloured decorative tarsia pattern.
According to further forms of embodiment, which are obtainable by using DC machine tools, the invention is not limited to the production of elements which are tarsia-worked on a single plane: in fact, by using a DC machine having five working axles, any kind of tarsia decoration may be carried out, also on curved surfaces.
These and other variants fall within the scopes of the invention, in the range of mechanical equivalences.

Claims

1. Process for tarsia-working of stone-like materials as marble, stone, granite or the like, in which a first supporting element (12) accomodates on its visible surface at least a second element (11) forming a decorative tarsia pattern, characterised in that said first element is machined by means of a digitally controlled (DC) machine tool in order to form on it a series of grooves and/or notches (14), in that a suitable bonding agent is laid down on said grooves and/or notches, in that said at least a second elemnt is machined by means of a digitally controlled (DC) machine tool in order to form on it, in relief, a decorative pattern or portions of a decorative pattern, in that said at least a second element is embedded in said grooves and/or notches, and in that the supporting material belonging to said at least a second element is removed from the formed block, thereby enabling the sight of the decorative pattern formed on said first element .
2. Process according to claim 1, characterised in that said first element is configurated as a block, or a tile, or other .
3. Process according to anyone of the preceding claims, characterised in that said suitable bonding agent is constituted by a glue or by a resin.
4. Process according to anyone of the preceding claims, characterised in that said DC machine tool is provided with diamond or hard-metal cutters in order to form said notches and/or grooves and said decorative pattern in relief on said first and at least a second element.
5. Process according to anyone of the preceding claims, characterised in that the final product is smoothed and/or polished and/or sandblast.
6. Process according to anyone of the preceding claims, characterised in that a plurality of second elements (11) provided with areas in relief suitable to be accomodated in said grooves and/or notches are superimposed to said first element (12).
7. Process according to anyone of the preceding claims, characterised in that the surface on which the tarsia working is carried out is flat and/or curved.
8. Product constituted by a tarsia-worked stone-like material as marble, stone, granite or the like, in which a first element forming a support is provided with a tarsia decorative pattern constituted by at least a second material, characterised in that said product is obtained by means of a process according to anyone of the preceding claims.
PCT/IT1992/000126 1992-03-09 1992-10-16 Process for tarsia-working of marble, granite, etc. WO1993017881A1 (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
AU29248/92A AU2924892A (en) 1992-03-09 1992-10-16 Process for tarsia-working of marble, granite, etc.
EP92923340A EP0630327A1 (en) 1992-03-09 1992-10-16 Process for tarsia-working of marble, granite, etc.
JP5515515A JPH07503423A (en) 1992-03-09 1992-10-16 Inlay processing method for marble, granite, etc.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
ITVR920019A IT1257016B (en) 1992-03-09 1992-03-09 PROCESS FOR INLAY PROCESSING OF MARBLE-TYPE MATERIALS STONE GRANITE AND PRODUCT OBTAINED THROUGH THIS PROCEDURE
ITVR92A000019 1992-03-09

Publications (1)

Publication Number Publication Date
WO1993017881A1 true WO1993017881A1 (en) 1993-09-16

Family

ID=11427469

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/IT1992/000126 WO1993017881A1 (en) 1992-03-09 1992-10-16 Process for tarsia-working of marble, granite, etc.

Country Status (5)

Country Link
EP (1) EP0630327A1 (en)
JP (1) JPH07503423A (en)
CA (1) CA2130256A1 (en)
IT (1) IT1257016B (en)
WO (1) WO1993017881A1 (en)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2277051A (en) * 1993-04-13 1994-10-19 Charles Frederick Seber Deepwood special effects
ES2076877A2 (en) * 1993-11-30 1995-11-01 Marmoles Artisticos F J Pardo Process for decorating marbles and granites
DE4432014A1 (en) * 1994-09-08 1996-03-14 Foracon Maschinen Und Anlagenb Process for exact, solid, countersunk fitting of insert
ES2136492A1 (en) * 1996-04-12 1999-11-16 Larrea Bellod Ivan Alejandro Production process for manufacturing materials with encrustations, especially suitable for stone
ITMI20130154A1 (en) * 2013-02-04 2014-08-05 Italcementi Spa DECORATED CEMENT FACTORIES

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1229911A (en) * 1967-05-26 1971-04-28
DE2205888A1 (en) * 1972-02-08 1973-08-16 Otto Feix Fa INLAY STONES FOR JEWELRY AND ORNAMENTAL PURPOSES AND PROCESSES FOR THEIR PRODUCTION
US4036929A (en) * 1976-02-13 1977-07-19 Gould Eugene L Method of forming decorative inserts in granite and the like
US4126500A (en) * 1977-04-14 1978-11-21 Palanos Paul N Methods of making inlays using laser engraving
EP0066311A1 (en) * 1981-05-21 1982-12-08 Giuseppe Silingardi Partially glaze-decorated tile, with the decorations embedded therein
GB2138461A (en) * 1982-07-23 1984-10-24 Travertino Romano Spa Method of producing patterned compound tiles
WO1989003168A2 (en) * 1987-10-09 1989-04-20 William Edward Hollier Improved machining system

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1229911A (en) * 1967-05-26 1971-04-28
DE2205888A1 (en) * 1972-02-08 1973-08-16 Otto Feix Fa INLAY STONES FOR JEWELRY AND ORNAMENTAL PURPOSES AND PROCESSES FOR THEIR PRODUCTION
US4036929A (en) * 1976-02-13 1977-07-19 Gould Eugene L Method of forming decorative inserts in granite and the like
US4126500A (en) * 1977-04-14 1978-11-21 Palanos Paul N Methods of making inlays using laser engraving
EP0066311A1 (en) * 1981-05-21 1982-12-08 Giuseppe Silingardi Partially glaze-decorated tile, with the decorations embedded therein
GB2138461A (en) * 1982-07-23 1984-10-24 Travertino Romano Spa Method of producing patterned compound tiles
WO1989003168A2 (en) * 1987-10-09 1989-04-20 William Edward Hollier Improved machining system

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2277051A (en) * 1993-04-13 1994-10-19 Charles Frederick Seber Deepwood special effects
GB2277051B (en) * 1993-04-13 1996-12-18 Charles Frederick Seber Deep wood special effects
ES2076877A2 (en) * 1993-11-30 1995-11-01 Marmoles Artisticos F J Pardo Process for decorating marbles and granites
DE4432014A1 (en) * 1994-09-08 1996-03-14 Foracon Maschinen Und Anlagenb Process for exact, solid, countersunk fitting of insert
ES2136492A1 (en) * 1996-04-12 1999-11-16 Larrea Bellod Ivan Alejandro Production process for manufacturing materials with encrustations, especially suitable for stone
ITMI20130154A1 (en) * 2013-02-04 2014-08-05 Italcementi Spa DECORATED CEMENT FACTORIES
WO2014118762A1 (en) * 2013-02-04 2014-08-07 Italcementi S.P.A. Decorated concrete products

Also Published As

Publication number Publication date
ITVR920019A1 (en) 1993-09-09
EP0630327A1 (en) 1994-12-28
JPH07503423A (en) 1995-04-13
ITVR920019A0 (en) 1992-03-09
IT1257016B (en) 1996-01-05
CA2130256A1 (en) 1993-09-16

Similar Documents

Publication Publication Date Title
US5047187A (en) Method of making ornamental pre-cast terrazzo panels with integral inlay design
US5185192A (en) Ornamental pre-cast terrazzo panels with integral inlay design
US20030070671A1 (en) Method of forming stone inlays in wood and article of manufacture
WO1993017881A1 (en) Process for tarsia-working of marble, granite, etc.
EP3254817A1 (en) Process for the restoration or the consolidation of slabs of stone material
EP0894593B1 (en) Method for manufacturing mosaic tesserae with an antique appearance, and mosaic tesserae obtainable thereby
EP1266734B1 (en) Method and apparatus for the making of tiles, in particular for venetian floor tiles and the like
CN1032551C (en) Flooring and polishing technology of granite and marble floor
US20030019571A1 (en) Decorative surface covering and method of forming the same
US20040161546A1 (en) Method Of Making A Stone Veneer
US5193311A (en) Tools for working non-metallic hard materials
EP2060362A2 (en) Process and plant for working a stone tile and tile thus obtained
DE4413865A1 (en) Paving stone with structured surface
NL8302473A (en) METHOD FOR MANUFACTURING TILES OR PLATES WITH A DECORATIVE PATTERN
IT8140014A0 (en) MACHINE TOOL FOR SANDING MARBLE, GRANITE AND SIMILAR SLABS AND FLOORINGS
US6244262B1 (en) Method for cutting concrete into predetermined shapes
US20020041937A1 (en) Stone veneer
MXPA04003659A (en) Process for modelling tiles and slabs.
EP1592568A2 (en) Method for obtaining slabs provided of a mosaic decoration and slab obtained by means of said method
US20070261351A1 (en) Process for forming wood mosaics for floorings and coverings
WO2000046044A1 (en) Production method of relief marble surfaces
RU2234423C2 (en) Method of ornamental encasing of a surface with a natural stone material
KR102327353B1 (en) Artificial stone slab with pre-made solid state to be exposed in all directions pattern using for a cutting tool
ATA113693A (en) METHOD FOR AUTOMATIC POLISHING OF FLAT EDGES ON PANELS OF MARBLE, NATURAL STONE, GRANITE OR THE LIKE. AND AUTOMATIC POLISHING MACHINE FOR CARRYING OUT THIS PROCESS
EP0405640B1 (en) Tools for working non-metallic hard materials

Legal Events

Date Code Title Description
AK Designated states

Kind code of ref document: A1

Designated state(s): AU BR CA FI JP NO RU UA US

AL Designated countries for regional patents

Kind code of ref document: A1

Designated state(s): AT BE CH DE DK ES FR GB GR IE IT LU MC NL SE

DFPE Request for preliminary examination filed prior to expiration of 19th month from priority date (pct application filed before 20040101)
WWE Wipo information: entry into national phase

Ref document number: 1992923340

Country of ref document: EP

WWE Wipo information: entry into national phase

Ref document number: 2130256

Country of ref document: CA

ENP Entry into the national phase

Ref document number: 1994 302718

Country of ref document: US

Date of ref document: 19940909

Kind code of ref document: A

WWP Wipo information: published in national office

Ref document number: 1992923340

Country of ref document: EP

WWR Wipo information: refused in national office

Ref document number: 1992923340

Country of ref document: EP

WWW Wipo information: withdrawn in national office

Ref document number: 1992923340

Country of ref document: EP