Patent US3342553A successfully refreshed from Google Patents.
US3342553A
Expired / Lapsed
US
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Process for making vanadium carbide briquettes
Assignee: Vanadium Corp of America
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Filing: 1965-03-10
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Granted: 1967-09-19
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Expires: 1985-03-10
Abstract
No abstract record available.
Inventors
- 👤 Donald O Buker
- 👤 Timothy W Merrill
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 13:16
CPC Classifications
C; C22; C22C; C22C35/00; C22C35/005; C01; C01B; C01B32/00; C01B32/90; C01B32/914; C22B; C22B1/00; C22B1/14; C22B1/24; C22B34/00; C22B34/20; C22B34/22; C22B5/00; C01P; C01P2004/00; C01P2004/51; C01P2004/60; C01P2004/61; C01P2006/00; C01P2006/10; C01P2006/80
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
187 words
A METHOD FOR PRODUCING A COMPACTED AND SINTERED VANADIUM CARBIDE ADDITION ALLOY FROM FUSED AND CURSHED VANADIUM PENTOXIDE COMPRISING: (A) SUBJECTING SAID PENTOXIDE TO A TEMPERATURE OF FROM ABOUT 1050*F. TO 1150*F. IN A GASEOUS HYDROCARBON REDUCING ATMOSPHERE SO AS TO CONVERT SAID PENTOXIDE TO VANADIUM TETRAOXIDE; (B) SUBJECTING SAID VANADIUM TETRAOXIDE TO A TEMPERATURE OF AT LEAST 1900*F. IN A GASEOUS HYDROCARBON REDUCING ATMOSPHERESO AS TO CONVERT SAID TETRAOXIDE TO VANADIUM OXYCARBIDE; (C) COOLING SAID VANADIUM OXYCARBIDE TO SUBSTANTIALLY AMBIENT TEMPERATURES FROM SAID AT LEAST 1900*F. IN A NONOXIDIZING ENVIRONMENT; (D) MIXING A CARBON SOURCE MATERIAL WITH SAID VANADIUM OXYCARBIDE IN AMOUNTS TO EFFECT A STOICHIOMETRIC BALANCE OF CARBON TO OXYGEN WITHIN SAID MIXTURE AS TO RENDER IN THE ALLOY AN EXCESS CARBON CONTENT WHICH WHEN COMBINED WITH THE VANADIUM CONTENT ALONE CONSISTS OF FROM ABOUT 8% TO ABOUT 15% (BY WEIGHT) CARBON; (E) BRIQUETTING SAID MIXTURE; (F) SUBJECTING SAID BRIQUETTES TO A TEMPERATURE OF FROM ABOUT 2500*F. TO 2700*F. WHILE CONTINUOUSLY WITHDRAWING THE EVOLVING GASES UNTIL THE EVOLUTION OF GAS SUBSTANTIALLY STOPS; AND (G) COOLING SAID BRIQUETTES TO SUBSTANTIALLY AMBIENT TEMPERATURES IN A NONOXIDIZING ENVIRONMENT.
Claim 2
Independent Claim
187 words
A METHOD FOR PRODUCING A COMPACTED AND SINTERED VANADIUM CARBIDE ADDITION ALLOY FROM FUSED AND CURSHED VANADIUM PENTOXIDE COMPRISING: (A) SUBJECTING SAID PENTOXIDE TO A TEMPERATURE OF FROM ABOUT 1050*F. TO 1150*F. IN A GASEOUS HYDROCARBON REDUCING ATMOSPHERE SO AS TO CONVERT SAID PENTOXIDE TO VANADIUM TETRAOXIDE; (B) SUBJECTING SAID VANADIUM TETRAOXIDE TO A TEMPERATURE OF AT LEAST 1900*F. IN A GASEOUS HYDROCARBON REDUCING ATMOSPHERESO AS TO CONVERT SAID TETRAOXIDE TO VANADIUM OXYCARBIDE; (C) COOLING SAID VANADIUM OXYCARBIDE TO SUBSTANTIALLY AMBIENT TEMPERATURES FROM SAID AT LEAST 1900*F. IN A NONOXIDIZING ENVIRONMENT; (D) MIXING A CARBON SOURCE MATERIAL WITH SAID VANADIUM OXYCARBIDE IN AMOUNTS TO EFFECT A STOICHIOMETRIC BALANCE OF CARBON TO OXYGEN WITHIN SAID MIXTURE AS TO RENDER IN THE ALLOY AN EXCESS CARBON CONTENT WHICH WHEN COMBINED WITH THE VANADIUM CONTENT ALONE CONSISTS OF FROM ABOUT 8% TO ABOUT 15% (BY WEIGHT) CARBON; (E) BRIQUETTING SAID MIXTURE; (F) SUBJECTING SAID BRIQUETTES TO A TEMPERATURE OF FROM ABOUT 2500*F. TO 2700*F. WHILE CONTINUOUSLY WITHDRAWING THE EVOLVING GASES UNTIL THE EVOLUTION OF GAS SUBSTANTIALLY STOPS; AND (G) COOLING SAID BRIQUETTES TO SUBSTANTIALLY AMBIENT TEMPERATURES IN A NONOXIDIZING ENVIRONMENT.
References Cited (Backward Citations)
US2364123A
Cited
US3077385A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1970-09-18 | 1971-03-20 | 1971-09-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-09-18 | 1975-03-20 | 1975-09-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-09-18 | 1979-03-20 | 1979-09-19 | $7700.00 | Window Closed / Lapsed |