Patent US3416976A successfully refreshed from Google Patents.
US3416976A
Expired / Lapsed
US
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Method for heat treating titanium carbide tool steel
Assignee: Alloy Technology International Inc
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Filing: 1965-11-16
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Granted: 1968-12-17
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Expires: 1985-11-16
Abstract
No abstract record available.
Inventors
- 👤 Brill-Edwards Harry Walter
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 14:30
CPC Classifications
C; C22; C22C; C22C33/00; C22C33/02; C22C33/0257; C22C33/0278; C22C33/0292; C22C29/00; C22C29/02; C22C29/06; C22C29/067; C22C38/00; C22C38/18; C22C38/22
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) | 1971-12-17 | 1972-06-17 | 1972-12-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-12-17 | 1976-06-17 | 1976-12-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-12-17 | 1980-06-17 | 1980-12-17 | $7700.00 | Window Closed / Lapsed |