EP0343846A3
Process for the preparation of polycrystalline diamond
Abstract
A process for the preparation of continuous polycrystalline diamond, especially diamond films, which comprises applying to a substrate diamond powder in an amount of from about one particle per ten square microns to about 10 particles per square micron with an average particle diameter of from about 0.1 to about 1.0 micron (more especially from about 0.1 to about 0.4 micron); heating the resulting powdered substrate subsequent to incorporation in a processing apparatus; introducing a mixture of gases into the chamber, which gases provide a supply of carbon and hydrogen; and decomposing the gas mixture.
Term
Term ended
Projected expiry passed 18 May 2009, 17.4 years ago.
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Every citation, both waysCites: the store holds 0 of 1
| Reference | Relation | Cited during |
|---|---|---|
| PATENT ABSTRACTS OF JAPAN, vol. 11, no. 365 (C-460)[2812], 27th November 1987; & JP-A-62 138 395 (KYOCERA CORP.) 22-06-1987 | Non-patent | Search report |
| INTERNATIONAL JOURNAL OF REFRACTORY AND HARD METALS, vol. 7, no. 2, June 1988, pages 92-107, Shrewsbury, GB; P.-O. JOFFREAU et al.: "Low-pressure diamond growth on high-pressure diamond crystals pressed onto different substrates" | Non-patent | Search report |
| JOURNAL OF APPLIED PHYSICS, vol. 63, no. 5, 1st March 1988, pages 1744-1748, American Institute of Physics, New York, US; C.-P. CHANG et al.: "Diamond crystal growth by plasma chemical vapor deposition" | Non-patent | Search report |
| PATENT ABSTRACTS OF JAPAN, vol. 12, no. 92 (C-483)[2939], 25th March 1988; & JP-A-62 226 889 (TOSHIBA TUNGALOY CO., LTD) 05-10-1987 | Non-patent | Search report |
| PATENT ABSTRACTS OF JAPAN, vol. 13, no. 205 (C-595)[3553], 15th May 1989; & JP-A-01 024 092 (SHOWA DENKO K.K.) 26-01-1989 | Non-patent | Search report |
| PATENT ABSTRACTS OF JAPAN, vol. 13, no. 260 (C-607)[3608], 15th June 1989; & JP-A-01 061 397 (ASAHI DAIYAMONDO KOGYO K.K.) 08-03-1989 | Non-patent | Search report |
| PATENT ABSTRACTS OF JAPAN, vol. 13, no. 579 (C-668)[3927], 20th December 1989; & JP-A-1 242 490 (MITSUBISHI METAL CORP.) 27-09-1989 | Non-patent | Search report |
8 members in 5 offices
Priority claims4
| Document | Office | Kind | Date |
|---|---|---|---|
| 199646 | United States of America | – | |
| 19964688 | United States of America | A | |
| 19964688 | United States of America | A | |
| US19880199646 | – | – | – |
Members8
| Document | Office | Kind | |
|---|---|---|---|
| EP0343846A2 | European Patent Office (EPO) | A2 | |
| JPH0218392A | Japan | A | |
| US4925701A | United States of America | A | |
| EP0343846A3This record | European Patent Office (EPO) | A3 | |
| CA1337855C | Canada | C | |
| JP2536927B2 | Japan | B2 | |
| EP0343846B1 | European Patent Office (EPO) | B1 | |
| DE68927509D1 | Germany | D1 |
28 legal events, as 2 offices reported them to INPADOC
Over the term
Point at a mark for the eventEvents
| Event | Code | Office | |
|---|---|---|---|
| Lapsed in a contracting state [announced via postgrant information from national office to epo]LapsedPG25 | PG25 | EP | |
| Patent expired after termination of 20 yearsExpiredPE20 | PE20 | GB | |
| Annual fee paid to national office [announced via postgrant information from national office to epo]GrantedPGFP | PGFP | EP | |
| European patent in force as of 2002-01-01IF02 | IF02 | GB | |
| Opposition proceedings terminatedOpposition27C | 27C | EP | |
| Termination of opposition procedure: date of legal effect publishedOppositionORIGINAL CODE: 0009276PLBM | PLBM | EP | |
| Information on the status of an ep patent application or granted ep patentGrantedSTATUS: OPPOSITION PROCEDURE CLOSEDSTAA | STAA | EP | |
| Opposition procedure terminatedOppositionORIGINAL CODE: EPIDOS OPPCPLBL | PLBL | EP | |
| Reply of patent proprietor to notice(s) of oppositionOppositionORIGINAL CODE: EPIDOS OBSOPLBF | PLBF | EP | |
| Opposition filedOpposition26 | 26 | EP | |
| Reply of patent proprietor to notice(s) of oppositionOppositionORIGINAL CODE: EPIDOS OBSOPLBF | PLBF | EP | |
| Opposition filedOppositionORIGINAL CODE: 0009260PLBI | PLBI | EP | |
| Unpublished change to opponent dataORIGINAL CODE: EPIDOS OPPOPLBQ | PLBQ | EP | |
| Fr: translation not filedEN | EN | EP | |
| Lapsed in a contracting state [announced via postgrant information from national office to epo]LapsedPG25 | PG25 | EP | |
| Corresponds to:REF | REF | EP | |
| Designated contracting statesAK | AK | EP | |
| Lapsed in a contracting state [announced via postgrant information from national office to epo]LapsedPG25 | PG25 | EP | |
| (expected) grantORIGINAL CODE: 0009210GRAA | GRAA | EP | |
| Despatch of communication of intention to grant a patentORIGINAL CODE: EPIDOS IGRAGRAH | GRAH | EP | |
| Despatch of communication of intention to grant a patentORIGINAL CODE: EPIDOS IGRAGRAH | GRAH | EP | |
| Despatch of communication of intention to grantORIGINAL CODE: EPIDOS AGRAGRAG | GRAG | EP | |
| First examination report despatched17Q | 17Q | EP | |
| Request for examination filed17P | 17P | EP | |
| Designated contracting statesAK | AK | EP | |
| Search report despatchedORIGINAL CODE: 0009013PUAL | PUAL | EP | |
| Designated contracting statesAK | AK | EP | |
| Public reference made under article 153(3) epc to a published international application that has entered the european phaseORIGINAL CODE: 0009012PUAI | PUAI | EP |
Numbers
- Publication
- 0343846
- Publication, DOCDB
- 0343846
- Publication, EPODOC
- EP0343846
- Application
- 305015
- Application, DOCDB
- 89305015
- Application, EPODOC
- EP19890305015
Titles3
- German
- Verfahren zur Herstellung von polykristallinem Diamant
- English
- Process for the preparation of polycrystalline diamond
- French
- Procédé de fabrication de diamant polycristallin
Classification
- CPC, 5
- H10W99/00
- C23C16/0272
- C23C16/27
- C30B25/02
- C30B29/04
- IPC, 5
- C23C16 02
- C23C16 27
- C30B25 02
- H01L21 48
- C30B29 04
Designated states1
- Contracting states, 1
- United Kingdom