US3758296A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Corrosion resistant alloy
Assignee: Chas S Lewis & Co Inc us
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Filing: 1970-10-29
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Granted: 1973-09-11
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Expires: 1990-10-29
Abstract
Abstract A HIGHLY CORROSION-RESISTANT, WORKABLE, DURABLE, STRONG, HARDENABLE, RELATIVELY INEXPENSIVE NICKEL-BASED, HIGH CHROMIUM, HIGH IRON, AUSTENITIC ALLOY, CONTAINING, IN APPROXIMATELY THE QUANTITIES INDICATED: NI 26-48 (PREFERABLY TO 38%) (BALANCE); CR 30-34%; MO 4-5.25%; CO 4-7.5%; FE 3-25% (BUT PREFERABLY 10-25%); CU 2.5-8%; C .05.25%; SI TO 4%; B TO .10%; AND WITH THE PREFERABLE RANGE OF SI ABOUT 2-3.5% SO THAT THE ALLOY IS AGE HARDENABLE. ALL PERCENTAGES HEREIN ARE BY WEIGHT.
Inventors
- 👤 T Johnson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 19:07
CPC Classifications
C; C22; C22C; C22C19/00; C22C19/03; C22C19/05; C22C19/051; C22C19/053
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) | 1976-09-10 | 1977-03-12 | 1977-09-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-09-10 | 1981-03-12 | 1981-09-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-09-10 | 1985-03-12 | 1985-09-11 | $7700.00 | Window Closed / Lapsed |