US3150971A
Expired / Lapsed
US
⏱️ 0.0 years remaining
High-temperature tungsten base alloys
Assignee: Union Carbide Corp
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Filing: 1959-02-25
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Granted: 1964-09-29
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Expires: 1979-02-25
Abstract
No abstract record available.
Inventors
- 👤 Edward D Weisert
- 👤 Roger A Perkins
- 👤 Geiselman Doyle
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 16:51
CPC Classifications
C; C22; C22C; C22C27/00; C22C27/04
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
31 words
AN OXIDATION RESISTANT ALLOY FOR USE AT HIGH TEMPERATURES CONSISTING ESSENTIALLY OF ABOUT 10 PERCENT COLUMBIUM, ABOUT 30 PERCENT CHROMIUM, ABOUT 10 PERCENT IRON, AND THE BALANCE TUNGSTEN AND INCIDENTAL IMPURITIES.
Claim 2
Dependent Claim
31 words
AN OXIDATION RESISTANT ALLOY FOR USE AT HIGH TEMPERATURES CONSISTING ESSENTIALLY OF ABOUT 10 PERCENT COLUMBIUM, ABOUT 30 PERCENT CHROMIUM, ABOUT 10 PERCENT IRON, AND THE BALANCE TUNGSTEN AND INCIDENTAL IMPURITIES.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1967-09-29 | 1968-03-30 | 1968-09-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-09-29 | 1972-03-30 | 1972-09-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-09-29 | 1976-03-30 | 1976-09-29 | $7700.00 | Window Closed / Lapsed |