US2826496A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Alloy steel
Assignee: Carpenter Steel Co
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Filing: 1955-10-14
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Granted: 1958-03-11
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Expires: 1975-10-14
Abstract
No abstract record available.
Inventors
- 👤 Wesley R Kegerise
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 14:41
CPC Classifications
C; C22; C22C; C22C38/00; C22C38/18; C22C38/40; C22C38/58
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
62 words
AUSTENITIC CHROMIUM-NICKEL-PHOSPHORUS-COPPER STAINLESS STEEL READILY AGE HARDENABLE TO ROCKWELL C 30 AND ABOVE CONTAINING FROM ABOUT 0.10% TO NOT MORE THAN 0.30% CARBON, ABOUT 0.15% TO ABOUT 0.40% PHOSPHORUS, FROM ABOUT 0.5% TO ABOUT 3% COPPER, ABOUT 12% TO ABOUT 30% CHROMIUM, ABOUT 3% TO ABOUT 35% NICKEL AND MANGANESE COMBINED BUT NO LESS THAN 3% NICKEL, AND THE REMAINDER SUBSTANTIALLY IRON.
Claim 2
Dependent Claim
62 words
AUSTENITIC CHROMIUM-NICKEL-PHOSPHORUS-COPPER STAINLESS STEEL READILY AGE HARDENABLE TO ROCKWELL C 30 AND ABOVE CONTAINING FROM ABOUT 0.10% TO NOT MORE THAN 0.30% CARBON, ABOUT 0.15% TO ABOUT 0.40% PHOSPHORUS, FROM ABOUT 0.5% TO ABOUT 3% COPPER, ABOUT 12% TO ABOUT 30% CHROMIUM, ABOUT 3% TO ABOUT 35% NICKEL AND MANGANESE COMBINED BUT NO LESS THAN 3% NICKEL, AND THE REMAINDER SUBSTANTIALLY IRON.
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) | 1961-03-10 | 1961-09-09 | 1962-03-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-03-10 | 1965-09-09 | 1966-03-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-03-10 | 1969-09-09 | 1970-03-11 | $7700.00 | Window Closed / Lapsed |