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Patent US3813239A successfully refreshed from Google Patents.
US3813239A
Expired / Lapsed
US
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Corrosion-resistant nickel-iron alloy
Assignee: Huntington Alloys Corp
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Filing: 1973-02-07
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Granted: 1974-05-28
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Expires: 1993-02-07
Abstract
Abstract ALLOY CONTAINING SPECIALLY PROPORTIONED AMOUNTS OF NICKEL, CHROMIUM, COPPER AND MOLYMDENUM AND OPTIONALLY NIOBIUM ALONG WITH IRON IS CHARACTERIZED BY DESIRABLE COMBINATION OF WORKABILITY, RESISTANCE TO CREVICE CORROSION IN CHLORIDE MEDIA AND RESISTANCE TO CORROSION IN ACIDS.
Inventors
- 👤 G Flint
- 👤 T Evans
- 👤 A Hart
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 09:53
CPC Classifications
C; C22; C22C; C22C19/00; C22C19/03; C22C19/05; C22C19/051; C22C19/055
Claims Analysis
Total Claims: 0
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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) | 1977-05-27 | 1977-11-26 | 1978-05-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-05-27 | 1981-11-26 | 1982-05-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-05-27 | 1985-11-26 | 1986-05-28 | $7700.00 | Window Closed / Lapsed |