Patent US3716627A successfully refreshed from Google Patents.
US3716627A
Expired / Lapsed
US
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Process for the preparation of vanadium carbide
Assignee: HOLLANDSE METALLURG IND BILLIT
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Filing: 1970-09-09
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Granted: 1973-02-13
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Expires: 1990-09-09
Abstract
Abstract A PROCESS FOR THE PREPARATION OF VANADIUM CARBIDE FROM AN OXIDIC, VANADIUM-CONTAINING MATERIAL WHICH COMPRISES CONTACTING THE MATERIAL AT HIGH TEMPERATURE WITH A GAS CONTAINING AT LEAST 60 VOLUME PERCENT THEREOF OF AT LEAST ONE LOW MOLECULAR WEIGHT HYDROCARBON IN AN AMOUNT NOT EXCEEDING TWICE THE STOICHIOMETRIC AMOUNT. THE CO AND HYDROGEN PRODUCED AS BY-PRODUCTS CAN BE USED TO FURNISH THE HEAT ENERGY REQUIRED.
Inventors
- 👤 S Middelhoek
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 03:35
CPC Classifications
C; C01; C01B; C01B32/00; C01B32/90; C01B32/914; C01P; C01P2006/00; C01P2006/80
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) | 1976-02-13 | 1976-08-14 | 1977-02-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-02-13 | 1980-08-14 | 1981-02-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-02-13 | 1984-08-14 | 1985-02-13 | $7700.00 | Window Closed / Lapsed |