Patent US3667938A successfully refreshed from Google Patents.
US3667938A
Expired / Lapsed
US
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Nickel base alloy
Assignee: ALLEGHENY INTERNATIONAL ACCEPTANCE Corp
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Filing: 1970-05-05
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Granted: 1972-06-06
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Expires: 1990-05-05
Abstract
Abstract AN ALLOY CONSISTING ESSENTIALLY OF 12 TO 20% CHROMIUM, 13 TO 19% COBALT, 4.5 TO ABOUT 7% TITANIUM, 1.3 TO 3% ALUMINUM, 2 TO 3.5% MOLYBDENUM, 0.5 TO 2.5% TUNGSTEN, THE COMBINED MOLYBDENUM AND TUNGSTEN CONTENT BEING 3 TO 6%, 0.05 TO 0.15% CARBON, 0.005 TO 0.03% BORON, THE TITANIUM AND ALUMINUM CONTENT BEING BALANCED SO AS TO PROVIDE A TITANIUM RATIO WITHIN A SPECIFIED RELATIONSHIP AND A COMBINED TITANIUM AND ALUMINUM CONTENT OF 6.5 TO 9%, THE BALANCE OF THE ALLOY BEING ESSENTIALLY NICKEL WITH UP TO 0.75% MANGANESE, UP TO 0.2% YTTRIUM, UP TO 0.2% OTHER RATRE EARTH ELEMENTS SUCH AS CERIUM OR LANTHANUM AND UP TO 0.5% IRON.
Inventors
- 👤 William J Boesch
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 21:20
CPC Classifications
C; C22; C22C; C22C19/00; C22C19/03; C22C19/05; C22C19/051; C22C19/056
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) | 1975-06-06 | 1975-12-06 | 1976-06-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-06-06 | 1979-12-06 | 1980-06-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-06-06 | 1983-12-06 | 1984-06-06 | $7700.00 | Window Closed / Lapsed |