Patent US3350689A successfully refreshed from Google Patents.
US2947610A
Expired / Lapsed
US
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Method of making diamonds
Assignee: General Electric Co
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Filing: 1958-01-06
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Granted: 1960-08-02
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Expires: 1978-01-06
Abstract
No abstract record available.
Inventors
- 👤 Hall Howard Tracy
- 👤 Herbert M Strong
- 👤 Jr Robert H Wentorf
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 21:30
CPC Classifications
B; B01; B01J; B01J3/00; B01J3/06; B01J3/062; B01J2203/00; B01J2203/06; B01J2203/065; B01J2203/0655; B01J2203/0675; B01J2203/068; Y; Y10; Y10S; Y10S425/00; Y10S425/026
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
74 words
THE METHOD OF SYNTHETICALLY MAKING DIAMONDS WHICH COMPRISES (1) COMBINING A CARBONACEOUS MATERIAL WITH A CATALYST MATERIAL SELECTED FROM THE CLASS CONSISTING OF IRON, COBALT, NICKEL, RHODIUM, RUTHENIUM, PALLADIUM, OSMIUM, IRIDIUM, CHROMIUM, TANTALUM, AND MANGANESE, (2) SUBJECTING THE AFORESAID CARBONACEOUS MATERIAL AND CATALYST MATERIAL IN THE DIAMOND FORMING REGION TO A PRESSURE OF AT LEAST ABOUT 75,000 ATMOSPHERES AT A TEMPERATURE OF FROM ABOUT 1200* TO ABOUT 2000*C., AND (3) RECOVERING THE DIAMOND FORMED.
Claim 2
Independent Claim
74 words
THE METHOD OF SYNTHETICALLY MAKING DIAMONDS WHICH COMPRISES (1) COMBINING A CARBONACEOUS MATERIAL WITH A CATALYST MATERIAL SELECTED FROM THE CLASS CONSISTING OF IRON, COBALT, NICKEL, RHODIUM, RUTHENIUM, PALLADIUM, OSMIUM, IRIDIUM, CHROMIUM, TANTALUM, AND MANGANESE, (2) SUBJECTING THE AFORESAID CARBONACEOUS MATERIAL AND CATALYST MATERIAL IN THE DIAMOND FORMING REGION TO A PRESSURE OF AT LEAST ABOUT 75,000 ATMOSPHERES AT A TEMPERATURE OF FROM ABOUT 1200* TO ABOUT 2000*C., AND (3) RECOVERING THE DIAMOND FORMED.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-08-02 | 1964-02-01 | 1964-08-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-08-02 | 1968-02-01 | 1968-08-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-08-02 | 1972-02-01 | 1972-08-02 | $7700.00 | Window Closed / Lapsed |