US3705937A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Producing diamonds synthetically
Assignee: Individual
•
Filing: 1970-05-01
•
Granted: 1972-12-12
•
Expires: 1990-05-01
Abstract
Abstract TE INVENTION RELATES TO METHODS OF PRODUCING DIAMOND SYNTHETICALLY WITH THE USE OF SEED CYRSTALS. ACCORDING TO THE INVENTION, THE METHOD OF SYNTHESIZING DIAMOND CONSISTS IN CONTACTING DIAMOND SEED CRYSTALS WITH AN ORGANOMETAL COMPOUND CONTAINING AT LEAST ONE EASILY BROKEN METAL CARBON BOND, AND IS CARRIED OUT AT A TEMPERATURE SELECTED FROM THE RANGE OF 300 TO 1800* K. AND AT THE RESULTING PARTIAL PRESSURE OF SAID ORGANOMETAL COMPOUND.
Inventors
- 👤 Boris Eduardovich Dzevitsky
- 👤 Boris Vladimirovich Spitsyn
- 👤 Dmitry Alexandrovich Kochkin
- 👤 Boris Vladimirovich Deryagin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 23:47
CPC Classifications
C; C30; C30B; C30B29/00; C30B29/02; C30B29/04; C01; C01B; C01B32/00; C01B32/25; C01B32/26; C30B25/00; C30B25/02
Claims Analysis
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References Cited (Backward Citations)
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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) | 1975-12-12 | 1976-06-12 | 1976-12-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-12-12 | 1980-06-12 | 1980-12-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-12-12 | 1984-06-12 | 1984-12-12 | $7700.00 | Window Closed / Lapsed |