US3574002A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Stainless steel having improved corrosion and fatigue resistance
Assignee: Huntington Alloys Corp
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Filing: 1968-08-01
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Granted: 1971-04-06
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Expires: 1988-08-01
Abstract
Abstract DIRECTED ESPECIALLY TO READILY WORKABLE STAINLESS STEELS HAVING A DUPLEX, E.G., AUSTENITE-FERRITE, MICROSTRUCTURE CONTAINING ABOUT 18% TO ABOUT 35%, E.G., ABOUT 26%, CHROMIUM ABOUT 2% TO ABOUT 12%, E.G., ABOUT 6.5%, NICKEL UP TO ABOUT 1.5%, E.G., ABOUT 0.2%, TITANIUM UP TO ABOUT 1% VANADUIM, NOT MORE THAN ABOUT 0.08%, E.G., UP TO ABOUT 0.05%, CARBON AND THE BALANCE SUBSTANTIALLY IRON.
Inventors
- 👤 Howard Wayne Hayden Jr
- 👤 Jere Hall Brophy
- 👤 Robert Cameron Gibson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 20:37
CPC Classifications
C; C22; C22C; C22C38/00; C22C38/18; C22C38/40
Claims Analysis
Total Claims: 0
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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) | 1974-04-05 | 1974-10-05 | 1975-04-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-04-05 | 1978-10-05 | 1979-04-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-04-05 | 1982-10-05 | 1983-04-06 | $7700.00 | Window Closed / Lapsed |