US2873187A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Austenitic alloys
Assignee: Allegheny Ludlum Steel Corp
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Filing: 1956-12-07
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Granted: 1959-02-10
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Expires: 1976-12-07
Abstract
No abstract record available.
Inventors
- 👤 Wasil W Dyrkacz
- 👤 Aggen George
- 👤 Edward E Reynolds
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 21:07
CPC Classifications
C; C21; C21D; C21D6/00; C21D6/02; C22; C22C; C22C19/00; C22C19/03; C22C19/05; C22C19/051; C22C19/055; C22C38/00; C22C38/18; C22C38/40; C22C38/44
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
98 words
AN AUSTENITIC PRECIPITATION HARDENING ALLOY CONSISTING OF UP TO 0.15% CARBON UP TO 1.5% MANGANESE, UP TO 1.5% SILICON, FROM ABOUT 10.0% TO ABOUT 20% CHROMIUM, FROM ABOUT 30% TO ABOUT 55% NICKEL, FROM ABOUT 2.5% TO ABOUT 5.0% OF THE SUM OF ALUMINUM AND TITANIUM, THE ALUMINUM BEING PRESENT IN AN AMOUNT OF AT LEAST 0.5% AND THE TITANIUM BEING PRESENT IN AN AMOUNT OF AT LEAST 1.0%, FROM ABOUT 1.0% TO ABOUT 8.0% MOLYBDENUM, FROM ABOUT 2.0% TO ABOUT 15.0% TUNGSTEN, TRACES TO 1.5% VANADIUM, AND FROM ABOUT 20.0% TO ABOUT 48.0% IRON WITH INCIDENTAL IMPURITIES.
Claim 2
Dependent Claim
98 words
AN AUSTENITIC PRECIPITATION HARDENING ALLOY CONSISTING OF UP TO 0.15% CARBON UP TO 1.5% MANGANESE, UP TO 1.5% SILICON, FROM ABOUT 10.0% TO ABOUT 20% CHROMIUM, FROM ABOUT 30% TO ABOUT 55% NICKEL, FROM ABOUT 2.5% TO ABOUT 5.0% OF THE SUM OF ALUMINUM AND TITANIUM, THE ALUMINUM BEING PRESENT IN AN AMOUNT OF AT LEAST 0.5% AND THE TITANIUM BEING PRESENT IN AN AMOUNT OF AT LEAST 1.0%, FROM ABOUT 1.0% TO ABOUT 8.0% MOLYBDENUM, FROM ABOUT 2.0% TO ABOUT 15.0% TUNGSTEN, TRACES TO 1.5% VANADIUM, AND FROM ABOUT 20.0% TO ABOUT 48.0% IRON WITH INCIDENTAL IMPURITIES.
References Cited (Backward Citations)
GB286367A
Cited
GB583845A
Cited
GB583841A
Cited
US2515185A
Cited
FR980191A
Cited
US2688536A
Cited
FR1114287A
Cited
US2781264A
Cited
FR1103237A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-02-09 | 1962-08-11 | 1963-02-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-02-09 | 1966-08-11 | 1967-02-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-02-09 | 1970-08-11 | 1971-02-10 | $7700.00 | Window Closed / Lapsed |