Patent US5219188A successfully refreshed from Google Patents.
Patent US2685546A successfully refreshed from Google Patents.
US2685546A
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Method for reducing the permeability of alloys by hydrogen
Assignee: United States Atomic Energy Commission
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Filing: 1952-01-05
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Granted: 1954-08-03
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Expires: 1972-01-05
Abstract
No abstract record available.
Inventors
- 👤 Jr Thomas R P Gibb
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 18:00
CPC Classifications
C; C21; C21D; C21D6/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
50 words
THE METHOD FOR REDUCING THE PERMEABILITY OF AN ALLOY BY HYDROGEN WHICH COMPRISES HEATING THE ALLOY IN AN ATMOSPHERE CONSISTING ESSENTIALLY OF HYDROGEN AT A TEMPERATURE NOT LESS THAN ABOUT 600* C. FOR A PERIOD OF TIME NOT LESS THAN ABOUT 24 HOURS, SAID ALLOY COMPRISING IRON, NICKEL AND CHROMIUM.
Claim 2
Independent Claim
50 words
THE METHOD FOR REDUCING THE PERMEABILITY OF AN ALLOY BY HYDROGEN WHICH COMPRISES HEATING THE ALLOY IN AN ATMOSPHERE CONSISTING ESSENTIALLY OF HYDROGEN AT A TEMPERATURE NOT LESS THAN ABOUT 600* C. FOR A PERIOD OF TIME NOT LESS THAN ABOUT 24 HOURS, SAID ALLOY COMPRISING IRON, NICKEL AND CHROMIUM.
References Cited (Backward Citations)
US1829118A
Cited
US1876091A
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US2057518A
Cited
US2395608A
Cited
US2486283A
Cited
US2557862A
Cited
US2587613A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1957-08-02 | 1958-02-01 | 1958-08-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-08-02 | 1962-02-01 | 1962-08-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-08-02 | 1966-02-01 | 1966-08-03 | $7700.00 | Window Closed / Lapsed |