Patent US3576602A successfully refreshed from Google Patents.
US3576602A
Expired / Lapsed
US
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Method for manufacturing diamond
Assignee: Individual
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Filing: 1968-07-15
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Granted: 1971-04-27
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Expires: 1988-07-15
Abstract
Abstract DIAMOND IS PRODUCED BY SUBJECTED TO ELEVATED TEMPERATURES AND PRESSURES A MIXTURE OF A NON-DIAMOND FORM OF CARBON, A SOLVENT CONSISTING OF A CARBIDE SUCH AS VANADIUM CARBIDE AND/OR A CARBIDE FORMING METAL SUCH AS VANADIUM, AND A CATALYST OR PROMOTER SELECTED FROM THE GROUP CONSISTING OF B-TI, B-ZR, B-HF, V, NB, CU AND BE.
Inventors
- 👤 Tatsuo Kuratomi
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 19:18
CPC Classifications
B; B01; B01J; B01J3/00; B01J3/06; B01J3/062; B01J2203/00; B01J2203/06; B01J2203/0605; B01J2203/061; B01J2203/0625; B01J2203/065; B01J2203/0655; B01J2203/0675; B01J2203/068
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-04-26 | 1974-10-26 | 1975-04-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-04-26 | 1978-10-26 | 1979-04-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-04-26 | 1982-10-26 | 1983-04-27 | $7700.00 | Window Closed / Lapsed |