US2763547A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Cast alloys
Assignee: Allegheny Ludlum Steel Corp
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Filing: 1955-06-09
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Granted: 1956-09-18
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Expires: 1975-06-09
Abstract
No abstract record available.
Inventors
- 👤 Wasil W Dyrkacz
- 👤 Edward E Reynolds
- 👤 William E Blatz
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 07:30
CPC Classifications
C; C22; C22C; C22C19/00; C22C19/07
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
64 words
A CAST AUSTENITIC ALLOY CONSISTING OF 0.10% TO 0.70% CARBON, UP TO 2.0% MANGANESE, UP TO 1.0% SILICON, 30.0% TO 70.0% COBALT, 18.0% TO 30.0% CHRONIUM, UP TO 22.0% NICKLEL, 2.0% TO 6.0% MOLYBDENUM, 2.0% TO 6.0% TUNGSTEN, 2.0 TO 6.0% OF METAL FROM THE GROUP CONSISTING OF COLUMBIUM AND TANTALUM, 0.60% TO 1.30% BORON, AND NOT MORE THAN 7.0% IRON WITH INCIDENTAL IMPURITIES.
Claim 2
Dependent Claim
64 words
A CAST AUSTENITIC ALLOY CONSISTING OF 0.10% TO 0.70% CARBON, UP TO 2.0% MANGANESE, UP TO 1.0% SILICON, 30.0% TO 70.0% COBALT, 18.0% TO 30.0% CHRONIUM, UP TO 22.0% NICKLEL, 2.0% TO 6.0% MOLYBDENUM, 2.0% TO 6.0% TUNGSTEN, 2.0 TO 6.0% OF METAL FROM THE GROUP CONSISTING OF COLUMBIUM AND TANTALUM, 0.60% TO 1.30% BORON, AND NOT MORE THAN 7.0% IRON WITH 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) | 1959-09-18 | 1960-03-19 | 1960-09-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-09-18 | 1964-03-19 | 1964-09-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-09-18 | 1968-03-19 | 1968-09-18 | $7700.00 | Window Closed / Lapsed |