US2486576A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Heat-treatment of cobalt base alloys and products
Assignee: Crucible Steel Company of America
•
Filing: 1946-04-13
•
Granted: 1949-11-01
•
Expires: 1966-04-13
Abstract
No abstract record available.
Inventors
- 👤 Charles H Savage
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 19:24
CPC Classifications
C; C22; C22F; C22F1/00; C22F1/10
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US1489116A
Cited
GB396380A
Cited
US2027780A
Cited
US2050865A
Cited
US1972241A
Cited
US2097176A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1952-10-31 | 1953-05-02 | 1953-11-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1956-10-31 | 1957-05-02 | 1957-11-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1960-10-31 | 1961-05-02 | 1961-11-01 | $7700.00 | Window Closed / Lapsed |