US2922714A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Columbium-tantalum-aluminum alloy
Assignee: Union Carbide Corp
•
Filing: 1957-04-03
•
Granted: 1960-01-26
•
Expires: 1977-04-03
Abstract
No abstract record available.
Inventors
- 👤 John L Benham
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 13:08
CPC Classifications
C; C22; C22C; C22C27/00; C22C27/02; C22C21/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
22 words
A COLUMBIUM-TANTALUM-ALUMINUM ALLOY CONSISTING ESSENTIALLY OF ABOUT 10% TO 35% TANTALUM, 10% TO 35% COLUMBIUM, AND THE REMAINDER ALUMINUM AND INCIDENTAL IMPURITIES.
Claim 2
Dependent Claim
22 words
A COLUMBIUM-TANTALUM-ALUMINUM ALLOY CONSISTING ESSENTIALLY OF ABOUT 10% TO 35% TANTALUM, 10% TO 35% COLUMBIUM, AND THE REMAINDER ALUMINUM AND INCIDENTAL IMPURITIES.
References Cited (Backward Citations)
US2369354A
Cited
US2579369A
Cited
US2740711A
Cited
US2769707A
Cited
US2711960A
Cited
US2754204A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-01-25 | 1963-07-27 | 1964-01-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-01-25 | 1967-07-27 | 1968-01-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-01-25 | 1971-07-27 | 1972-01-26 | $7700.00 | Window Closed / Lapsed |