Patent US2772964A successfully refreshed from Google Patents.
US2772964A
Expired / Lapsed
US
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Zirconium alloys
Assignee: Westinghouse Electric Corp
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Filing: 1954-03-15
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Granted: 1956-12-04
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Expires: 1974-03-15
Abstract
No abstract record available.
Inventors
- 👤 Donald E Thomas
- 👤 Kenneth M Goldman
- 👤 Robert B Gordon
- 👤 William A Johnson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 08:45
CPC Classifications
C; C22; C22C; C22C16/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
66 words
AN ALLOY CONSISTING ESSENTIALLY OF FROM 0.1% TO 2.5% BY WEIGHT OF TIN, AND A TOTAL OF AT LEAST 0.1% BUT NOT EXCEEDING APPROXIMATELY 2% BY WEIGHT OF AT LEAST ONE METAL FROM PERIOD 3 OF THE PERIODIC TABLE SELECTED FROM THE GROUP CONSISTING OF IRON, NICKEL AND CHROMIUM, CARBON NOT EXCEEDING 0.05%, THE BALANCE BEING ZIRCONIUM AND LESS THAN 0.5% BY WEIGHT OF INCIDENTAL IMPURITIES.
Claim 2
Dependent Claim
66 words
AN ALLOY CONSISTING ESSENTIALLY OF FROM 0.1% TO 2.5% BY WEIGHT OF TIN, AND A TOTAL OF AT LEAST 0.1% BUT NOT EXCEEDING APPROXIMATELY 2% BY WEIGHT OF AT LEAST ONE METAL FROM PERIOD 3 OF THE PERIODIC TABLE SELECTED FROM THE GROUP CONSISTING OF IRON, NICKEL AND CHROMIUM, CARBON NOT EXCEEDING 0.05%, THE BALANCE BEING ZIRCONIUM AND LESS THAN 0.5% BY WEIGHT OF INCIDENTAL IMPURITIES.
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) | 1959-12-04 | 1960-06-04 | 1960-12-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-12-04 | 1964-06-04 | 1964-12-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-12-04 | 1968-06-04 | 1968-12-04 | $7700.00 | Window Closed / Lapsed |