US3574612A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Nickel-chromium alloy
Assignee: United States Atomic Energy Commission
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Filing: 1969-02-03
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Granted: 1971-04-13
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Expires: 1989-02-03
Abstract
Abstract A NICKEL ALLOY CONTAINING 30 TO 35 WEIGHT PERCENT CHROMIUM AND 3.5 TO 3.9 WEIGHT PERCENT SILICON WITH SMALL AMOUNTS OF CARBON, TITANIUM AND MANGANESE IS HIGHLY CORROSION RESISTANT TO HOT, LIQUID AND VAPOR PHASE NITRIC ACID SOLUTIONS, CONTAINING IRON (III), CHROMIUM (VI) AND FLUORIDE IONS.
Inventors
- 👤 Roy F Maness
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 22:24
CPC Classifications
C; C22; C22C; C22C19/00; C22C19/03; C22C19/05; C22C19/058; D; D01; D01H; D01H9/00; D01H9/001; D01H9/003
Claims Analysis
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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) | 1974-04-12 | 1974-10-12 | 1975-04-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-04-12 | 1978-10-12 | 1979-04-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-04-12 | 1982-10-12 | 1983-04-13 | $7700.00 | Window Closed / Lapsed |