Patent US3591372A successfully refreshed from Google Patents.
US3591372A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Alloy stabilization
Assignee: MARTIN METALS CO
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Filing: 1968-08-12
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Granted: 1971-07-06
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Expires: 1988-08-12
Abstract
Abstract SENSITIVITY OF CERTAIN NICKEL-CHROMIUM-BASE ALLOYS TO FORMATION OF DELETERIOUS SIGMA PHASE CAN BE OVERCOME BY REPLACING NICKEL OR IRON IN SUCH ALLOYS WITH ABOUT 0.5% BY ABOUT 6% COBALT.
Inventors
- 👤 John Hockin
- 👤 Michael J Woulds
- 👤 Carl H Lund
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 13:22
CPC Classifications
C; C22; C22C; C22C19/00; C22C19/03; C22C19/05; C22C19/051
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) | 1974-07-05 | 1975-01-04 | 1975-07-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-07-05 | 1979-01-04 | 1979-07-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-07-05 | 1983-01-04 | 1983-07-06 | $7700.00 | Window Closed / Lapsed |