Patent US5015528A successfully refreshed from Google Patents.
US5015528A
Expired / Lapsed
US
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Fluidized bed diamond particle growth
Assignee: Advanced Refractory Technologies Inc
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Filing: 1988-03-22
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Granted: 1991-05-14
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Expires: 2008-03-22
Abstract
Abstract A process is provided for forming synthetic diamond by vapor deposition of a carbon gas source in the presence of atomic hydrogen on a substrate contained in a fluidized bed. The diamond may be overcoated by vapor deposition of a non-diamond material.
Inventors
- 👤 John M. Pinneo
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 20:05
CPC Classifications
C; C30; C30B; C30B25/00; C30B25/02; C30B25/18; B; B01; B01J; B01J8/00; B01J8/18; B01J8/24; B01J8/44; C30B29/00; C30B29/02; C30B29/04; Y; Y10; Y10T; Y10T428/00; Y10T428/29; Y10T428/2982; Y10T428/2991; Y10T428/30
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
40 words
A composition comprising diamond-containing particles, said particles comprising a synthetic diamond core and an outer layer of a non-diamond material selected from the group consisting of silicon nitride, silicon, boron nitride, aluminum nitride, aluminum oxide, beryllium oxide and zirconium oxide.
Claim 2
Dependent Claim
40 words
A composition comprising diamond-containing particles, said particles comprising a synthetic diamond core and an outer layer of a non-diamond material selected from the group consisting of silicon nitride, silicon, boron nitride, aluminum nitride, aluminum oxide, beryllium oxide and zirconium oxide.
Claim 3
Dependent Claim
13 words
A composition according to claim 1 wherein said non-diamond material comprises boron nitride.
Claim 4
Dependent Claim
13 words
A composition according to claim 1 wherein said non-diamond material comprises aluminum nitride.
Claim 5
Dependent Claim
24 words
A composition according to claim 1 wherein said non-diamond material is selected from the group consisting of silicon nitride, aluminum oxide and zirconium oxide.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1994-05-13 | 1994-11-12 | 1995-05-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1998-05-13 | 1998-11-12 | 1999-05-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2002-05-13 | 2002-11-12 | 2003-05-14 | $7700.00 | Window Closed / Lapsed |