US3243290A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Tantalum base alloy
Assignee: General Electric Co
•
Filing: 1963-07-22
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Granted: 1966-03-29
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Expires: 1983-07-22
Abstract
No abstract record available.
Inventors
- 👤 Jack W Clark
- 👤 Elaine S Jones
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 23:35
CPC Classifications
C; C22; C22C; C22C27/00; C22C27/02
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
67 words
AN IMPROVED TANTALUM BASE ALLOY CONSISTING OF, BY WEIGHT: ABOUT 8-12% W; ABOUT 0.01 TO 0.5% C; AT LEAST ONE GROUP IV-A METAL SELECTED FROM THE GROUP CONSISTING OF ZR IN AN AMOUNT LESS THAN 2% AND HF IN AN AMOUNT LESS THAN 4%, WITH THE ATOMIC RATIO OF GROUP IV-A METAL TO CARBON BEING BETWEEN ABOUT 0.2:1 AND 2:1, THE BALANCE BEING TA AND INCIDENTAL IMPURITIES.
Claim 2
Dependent Claim
67 words
AN IMPROVED TANTALUM BASE ALLOY CONSISTING OF, BY WEIGHT: ABOUT 8-12% W; ABOUT 0.01 TO 0.5% C; AT LEAST ONE GROUP IV-A METAL SELECTED FROM THE GROUP CONSISTING OF ZR IN AN AMOUNT LESS THAN 2% AND HF IN AN AMOUNT LESS THAN 4%, WITH THE ATOMIC RATIO OF GROUP IV-A METAL TO CARBON BEING BETWEEN ABOUT 0.2:1 AND 2:1, THE BALANCE BEING TA 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) | 1969-03-28 | 1969-09-27 | 1970-03-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-03-28 | 1973-09-27 | 1974-03-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-03-28 | 1977-09-27 | 1978-03-29 | $7700.00 | Window Closed / Lapsed |