US3512960A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Stainless steel resistant to stress-corrosion cracking
Assignee: United States Steel Corp
•
Filing: 1963-01-28
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Granted: 1970-05-19
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Expires: 1983-01-28
Abstract
No abstract record available.
Inventors
- 👤 Richard R Brady
- 👤 Kenneth G Brickner
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 07:13
CPC Classifications
C; C22; C22C; C22C38/00; C22C38/18; C22C38/40; C22C38/44
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
11 words
A MARTENSITIC PRECIPITATION-HARDENABLE STAINLESS STEEL WITH RESISTANCE TO STRESS-CORROSION CRACKING, COMPRISING
Claim 2
Dependent Claim
11 words
A MARTENSITIC PRECIPITATION-HARDENABLE STAINLESS STEEL WITH RESISTANCE TO STRESS-CORROSION CRACKING, COMPRISING
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) | 1973-05-18 | 1973-11-17 | 1974-05-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-05-18 | 1977-11-17 | 1978-05-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-05-18 | 1981-11-17 | 1982-05-19 | $7700.00 | Window Closed / Lapsed |