US3154412A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Heat-resistant high-strength stainless steel
Assignee: Crucible Steel Company of America
•
Filing: 1961-10-05
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Granted: 1964-10-27
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Expires: 1981-10-05
Abstract
No abstract record available.
Inventors
- 👤 Kasak August
- 👤 Edward J Dulis
- 👤 Vijay K Chandhok
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 02:17
CPC Classifications
C; C22; C22C; C22C38/00; C22C38/18; C22C38/30
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
24 words
A STAINLESS STEEL HAVING ENHANCED STRENGTH AND USEFUL DUCTILITY OVER A TEMPERATURE RANGE FROM SUBZERO TO ABOUT 1200*F., CONSISTING ESSENTIALLY, BY WEIGHT PERCENT, OF:
Claim 2
Dependent Claim
24 words
A STAINLESS STEEL HAVING ENHANCED STRENGTH AND USEFUL DUCTILITY OVER A TEMPERATURE RANGE FROM SUBZERO TO ABOUT 1200*F., CONSISTING ESSENTIALLY, BY WEIGHT PERCENT, OF:
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) | 1967-10-27 | 1968-04-27 | 1968-10-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-10-27 | 1972-04-27 | 1972-10-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-10-27 | 1976-04-27 | 1976-10-27 | $7700.00 | Window Closed / Lapsed |