US2536034A
Expired / Lapsed
US
⏱️ 0.0 years remaining
High-temperature stainless steel
Assignee: Armco Inc
•
Filing: 1948-08-23
•
Granted: 1951-01-02
•
Expires: 1968-08-23
Abstract
No abstract record available.
Inventors
- 👤 Jr William Charles Clarke
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 18:59
CPC Classifications
C; C22; C22C; C22C38/00; C22C38/18; C22C38/40; C22C38/48
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
58 words
AUSTENITIC CHROMIUM-NICKEL-COBALT STAINLESS STEEL, CONTAINING ABOUT 12% TO 22% CHROMIUM, AT LEAST 5% BUT LESS THAN 10% NICKEL, FROM 4% TO 40% COBALT, FROM SMALL QUANTITITE UP TO ABOUT 2% MANGANESE, 1% TO 4% MOLYBDENUM, 2% TO 4% COPPER, 0.01% TO 0.35% CARBON, FROM 0.15% TO 0.75% TITANIUM, 0.20% TO 1.10% COLUMBIUM, AND THE REMAINDER SUBSTANTIALLY ALL IRON.
Claim 2
Dependent Claim
58 words
AUSTENITIC CHROMIUM-NICKEL-COBALT STAINLESS STEEL, CONTAINING ABOUT 12% TO 22% CHROMIUM, AT LEAST 5% BUT LESS THAN 10% NICKEL, FROM 4% TO 40% COBALT, FROM SMALL QUANTITITE UP TO ABOUT 2% MANGANESE, 1% TO 4% MOLYBDENUM, 2% TO 4% COPPER, 0.01% TO 0.35% CARBON, FROM 0.15% TO 0.75% TITANIUM, 0.20% TO 1.10% COLUMBIUM, AND THE REMAINDER SUBSTANTIALLY ALL IRON.
References Cited (Backward Citations)
US2397034A
Cited
US2447897A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1954-01-01 | 1954-07-03 | 1955-01-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-01-01 | 1958-07-03 | 1959-01-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-01-01 | 1962-07-03 | 1963-01-02 | $7700.00 | Window Closed / Lapsed |