US2849275A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Production of refractory metal carbides
Assignee: Allegheny Ludlum Steel Corp
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Filing: 1954-01-21
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Granted: 1958-08-26
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Expires: 1974-01-21
Abstract
No abstract record available.
Inventors
- 👤 William H Bleccker
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 14:07
CPC Classifications
C; C01; C01B; C01B32/00; C01B32/90; C01B32/914; C01B32/921; C01P; C01P2002/00; C01P2002/50; C01P2006/00; C01P2006/80
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
91 words
IN THE PRODUCTION OF TITANIUM CARBIDE, THE STEPS COMPRISING, HEATING TITANIUM METAL IN AN ATMOSPHERE OF HYDROGEN AT A TEMPERATURE BETWEEN 325*C. AND 350*C. TO FORM TITANIUM HYDRIDE, MECHANICALLY COMMINUTING THE TITANIUM HYDRIDE, SCREENING THE COMMINUTED TITANIUM HYDRIDE TO OBTAIN A PREDETERMINED PARTICLE SIZE OF NO GREATER THAN 100 MESH, ADDING A PREDETERMINED MASS OF CARBON IN THE FORM OF FINE POWDER TO THE TITANIUM HYDRIDE, MIXING THE TITANIUM HYDRIDE AND CARBON TO PRODUCE A SUBSTANTIALLY UNIFORMLY BLENDED MIXTURE, AND VACUUM CARBURIZING THE MIXTURE AT A TEMPERATURE BETWEEN 1800*C. AND 2000*C.
Claim 2
Dependent Claim
91 words
IN THE PRODUCTION OF TITANIUM CARBIDE, THE STEPS COMPRISING, HEATING TITANIUM METAL IN AN ATMOSPHERE OF HYDROGEN AT A TEMPERATURE BETWEEN 325*C. AND 350*C. TO FORM TITANIUM HYDRIDE, MECHANICALLY COMMINUTING THE TITANIUM HYDRIDE, SCREENING THE COMMINUTED TITANIUM HYDRIDE TO OBTAIN A PREDETERMINED PARTICLE SIZE OF NO GREATER THAN 100 MESH, ADDING A PREDETERMINED MASS OF CARBON IN THE FORM OF FINE POWDER TO THE TITANIUM HYDRIDE, MIXING THE TITANIUM HYDRIDE AND CARBON TO PRODUCE A SUBSTANTIALLY UNIFORMLY BLENDED MIXTURE, AND VACUUM CARBURIZING THE MIXTURE AT A TEMPERATURE BETWEEN 1800*C. AND 2000*C.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-08-25 | 1962-02-24 | 1962-08-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-08-25 | 1966-02-24 | 1966-08-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-08-25 | 1970-02-24 | 1970-08-26 | $7700.00 | Window Closed / Lapsed |