Patent US3617347A successfully refreshed from Google Patents.
US3617347A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for the production of a silicon-coated diamond power
Assignee: Individual
•
Filing: 1969-11-12
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Granted: 1971-11-02
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Expires: 1989-11-12
Abstract
Abstract The feature of the present invention consists in forming silicon in nascent state on the surface of diamond powder, heating so as to form a thin film of silicon carbide on the bond surface of diamond with the silicon through covalent bonds and then forming silicon in nascent state on said thin film of silicon carbide whereby to form a film of silicon.
Inventors
- 👤 Tatsuo Kuratomi
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 10:30
CPC Classifications
C; C23; C23C; C23C16/00; C23C16/22; C09; C09K; C09K3/00; C09K3/14; C09K3/1436; C09K3/1445
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2925375A
Cited
US3520667A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-11-01 | 1975-05-03 | 1975-11-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-11-01 | 1979-05-03 | 1979-11-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-11-01 | 1983-05-03 | 1983-11-02 | $7700.00 | Window Closed / Lapsed |