Patent US2491410A successfully refreshed from Google Patents.
US2491410A
Expired / Lapsed
US
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Graphite-free titanium carbide and method of making same
Assignee: NL Industries Inc
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Filing: 1945-07-23
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Granted: 1949-12-13
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Expires: 1965-07-23
Abstract
No abstract record available.
Inventors
- 👤 Charles C Laughlin
- 👤 Wainer Eugene
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 13:44
CPC Classifications
C; C04; C04B; C04B35/00; C04B35/515; C04B35/56; C04B35/5607; C04B35/5611; C01; C01B; C01B32/00; C01B32/90; C01B32/914; C01B32/921; C04B35/622; C04B35/64; C04B35/65; C01P; C01P2004/00; C01P2004/80; C01P2006/00; C01P2006/60; C01P2006/80; Y; Y10; Y10T; Y10T24/00; Y10T24/14
Claims Analysis
Total Claims: 0
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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) | 1952-12-12 | 1953-06-13 | 1953-12-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1956-12-12 | 1957-06-13 | 1957-12-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1960-12-12 | 1961-06-13 | 1961-12-13 | $7700.00 | Window Closed / Lapsed |