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Patent US3589894A successfully refreshed from Google Patents.
US3589894A
Expired / Lapsed
US
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Sulfidation resistant cobalt-base alloy
Assignee: Garrett Corp
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Filing: 1968-05-31
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Granted: 1971-06-29
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Expires: 1988-05-31
Abstract
Abstract A SULFIDATION RESISTANT COBALT-BASE ALLOY COMPRISES A MAJOR AMOUNT OF COBALT, BETWEEN ABOUT 5 AND ABOUT 30% CHROMIUM BETWEEN ABOUT 0.05% AND ABOUT 3.0% BY WEIGHT OF A METAL SELECTED FROM THE GROUP CONSISTING OF SCANDIUM, LANTHANUM AND LANTHANIDE SERIES METAL, BETWEEN ABOUT 1.0% AND ABOUT 6.0% BY WEIGHT ALUMINUM AND PREFERABLY ALSO CONTAINING TUNGSTEN AND/OR MOLYBENUM, COLUMBIUM AND/OR TANATALUM AND CARBON.
Inventors
- 👤 Milton S Roush
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 07:55
CPC Classifications
C; C22; C22C; C22C19/00; C22C19/07
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) | 1974-06-28 | 1974-12-28 | 1975-06-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-06-28 | 1978-12-28 | 1979-06-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-06-28 | 1982-12-28 | 1983-06-29 | $7700.00 | Window Closed / Lapsed |