Patent US3591371A successfully refreshed from Google Patents.
US3591371A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Cobalt base oxidation resistant alloy
Assignee: Haynes International Inc
•
Filing: 1968-11-04
•
Granted: 1971-07-06
•
Expires: 1988-11-04
Abstract
Abstract A COBALT BASE, CHROMIUM-CONTAINING ALLOY HAVING MINOR AMOUNTS OF SILICON AND LANTHANUM CHARACTERIZED BY EXCELLENT OXIDATION RESISTANCE AT TEMPERATURES OF 1200*C. AND HIGHER. THE INCLUSION OF SMALL OF MANGANESE IN THE ALLOY FURTHER ENHANCES THE OXIDATION RESISTANCE OF THE ALLOY.
Inventors
- 👤 Henri Hatwell
- 👤 Charles D Desforges
- 👤 Pierre L Moentack
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 14:48
CPC Classifications
C; C22; C22C; C22C19/00; C22C19/07
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-07-05 | 1975-01-04 | 1975-07-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-07-05 | 1979-01-04 | 1979-07-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-07-05 | 1983-01-04 | 1983-07-06 | $7700.00 | Window Closed / Lapsed |