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US2797162A
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Low alloy steel for sub-zero temperature application
Assignee: Union Carbide Corp
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Filing: 1954-07-19
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Granted: 1957-06-25
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Expires: 1974-07-19
Abstract
No abstract record available.
Inventors
- 👤 Korczynsky Michael
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 16:17
CPC Classifications
C; C22; C22C; C22C38/00; C22C38/18; C22C38/40; C22C38/48
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
67 words
AN ALLOY CONTAINING ABOUT 0.02% TO 0.15% CARBON; 0.20% TO 1.20% MANGANESE; 0.05% TO 0.60* SILICON; 0.20% TO 1.20% COPPER: 0.25% TO 1.50% CHROMIUM; 1% TO 5% OF NICKEL; 0.03% TO 0.30% ALUMINIUM; UP TO 0.025% NITROGEN AND 0.05% TO 0.25% IN THE AGGREGATE OF TANTALUM AND COLUMBIUM, THE TANTALUM CONTENT BEING AT LEAST 0.04%; UP TO 0.50% OF MOLYBDENUM; AND THE REMAINDER IRON AND INCIDENTAL IMPURITIES.
Claim 2
Dependent Claim
67 words
AN ALLOY CONTAINING ABOUT 0.02% TO 0.15% CARBON; 0.20% TO 1.20% MANGANESE; 0.05% TO 0.60* SILICON; 0.20% TO 1.20% COPPER: 0.25% TO 1.50% CHROMIUM; 1% TO 5% OF NICKEL; 0.03% TO 0.30% ALUMINIUM; UP TO 0.025% NITROGEN AND 0.05% TO 0.25% IN THE AGGREGATE OF TANTALUM AND COLUMBIUM, THE TANTALUM CONTENT BEING AT LEAST 0.04%; UP TO 0.50% OF MOLYBDENUM; AND THE REMAINDER IRON AND INCIDENTAL IMPURITIES.
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) | 1960-06-24 | 1960-12-24 | 1961-06-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-06-24 | 1964-12-24 | 1965-06-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-06-24 | 1968-12-24 | 1969-06-25 | $7700.00 | Window Closed / Lapsed |