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US2926071A
Expired / Lapsed
US
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Preparation of titanium nitride of high purity
Assignee: Metal Hydrides Inc
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Filing: 1957-06-24
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Granted: 1960-02-23
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Expires: 1977-06-24
Abstract
No abstract record available.
Inventors
- 👤 Peter P Alexander
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 13:29
CPC Classifications
C; C01; C01B; C01B21/00; C01B21/06; C01B21/076; C01B21/0768; C01B21/0761; C01P; C01P2006/00; C01P2006/80
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2672400A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-02-22 | 1963-08-24 | 1964-02-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-02-22 | 1967-08-24 | 1968-02-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-02-22 | 1971-08-24 | 1972-02-23 | $7700.00 | Window Closed / Lapsed |