Patent US2921849A successfully refreshed from Google Patents.
US2921849A
Expired / Lapsed
US
⏱️ 0.0 years remaining
High strength alloy steels
Assignee: ATI Ladish Co Inc
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Filing: 1959-06-08
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Granted: 1960-01-19
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Expires: 1979-06-08
Abstract
No abstract record available.
Inventors
- 👤 Clyde A Furgason
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 20:51
CPC Classifications
C; C22; C22C; C22C38/00; C22C38/18; C22C38/40; C22C38/44; C22C38/46
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
103 words
AN IMPROVED ALLOY STEEL WHICH CONTAINS ABOUT 40-50% CARBON, ABOUT .58-93% MANGANESE, ABOUT 13-32% SILICON, ABOUT 35-75% NICKEL, ABOUT 87-1.23% CHROMIUM, ABOUT .88-1.12% MOLYBDENUM, UP TO ABOUT .010% PHOSPHOROUS, UP TO ABOUT .010% SULPHUR, AND THERE BEING .20 TO 1.00% VANADIUM, AND THE REMAINDER BEING IRON WITH INCIDENTAL IMPURITIES, AND THE METAL BEING CHARACTERIZED BY ITS ABILITY TO MAINTAIN HIGH STRENGTH CONSIDERING ITS LOW ALLOY CONTENT FOR PROLONGED PERIODS OF ELVEATED TEMPERATURES WITH ACCOMPANYING GOOD DUCTILITY, THERE BEING AN ABSENCE OF TEMPER BRITTLENESS WHEN TEMPERED AT LOW TEMPERING TEMPERATURES, AND THE METAL BEING CHARACTERIZED BY SUBSTANTIALLY INCREASED ELEVEATED TEMPERATURE AND STRESS RUPTURE PROPERTIES.
Claim 2
Dependent Claim
103 words
AN IMPROVED ALLOY STEEL WHICH CONTAINS ABOUT 40-50% CARBON, ABOUT .58-93% MANGANESE, ABOUT 13-32% SILICON, ABOUT 35-75% NICKEL, ABOUT 87-1.23% CHROMIUM, ABOUT .88-1.12% MOLYBDENUM, UP TO ABOUT .010% PHOSPHOROUS, UP TO ABOUT .010% SULPHUR, AND THERE BEING .20 TO 1.00% VANADIUM, AND THE REMAINDER BEING IRON WITH INCIDENTAL IMPURITIES, AND THE METAL BEING CHARACTERIZED BY ITS ABILITY TO MAINTAIN HIGH STRENGTH CONSIDERING ITS LOW ALLOY CONTENT FOR PROLONGED PERIODS OF ELVEATED TEMPERATURES WITH ACCOMPANYING GOOD DUCTILITY, THERE BEING AN ABSENCE OF TEMPER BRITTLENESS WHEN TEMPERED AT LOW TEMPERING TEMPERATURES, AND THE METAL BEING CHARACTERIZED BY SUBSTANTIALLY INCREASED ELEVEATED TEMPERATURE AND STRESS RUPTURE PROPERTIES.
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) | 1963-01-18 | 1963-07-20 | 1964-01-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-01-18 | 1967-07-20 | 1968-01-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-01-18 | 1971-07-20 | 1972-01-19 | $7700.00 | Window Closed / Lapsed |