US3173784A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Columbium base alloy
Assignee: Union Carbide Corp
•
Filing: 1958-12-22
•
Granted: 1965-03-16
•
Expires: 1978-12-22
Abstract
No abstract record available.
Inventors
- 👤 Stanley T Wlodek
- 👤 Edward D Weisert
- 👤 Peter M Moanfeldt
- 👤 Wallace F Sheely
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 09:33
CPC Classifications
C; C22; C22C; C22C27/00; C22C27/02
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
32 words
AN ALLOY CONSISTING ESSENTIALLY OF ABOUT 20 WEIGHT PERCENT TANTALUM, ABOUT 20 WEIGHT PERCENT TUNGSTEN, ABOUT 10 WEIGHT PERCENT TITANIUM, ABOUT 3 WEIGHT PERCENT VANADIUM, THE BALANCE BEING COLUMBIUM AND INCIDENTAL IMPURITIES.
Claim 2
Dependent Claim
32 words
AN ALLOY CONSISTING ESSENTIALLY OF ABOUT 20 WEIGHT PERCENT TANTALUM, ABOUT 20 WEIGHT PERCENT TUNGSTEN, ABOUT 10 WEIGHT PERCENT TITANIUM, ABOUT 3 WEIGHT PERCENT VANADIUM, THE BALANCE BEING COLUMBIUM AND INCIDENTAL IMPURITIES.
References Cited (Backward Citations)
US1588518A
Cited
US2822268A
Cited
US2838395A
Cited
US2881069A
Cited
US2883282A
Cited
US2907654A
Cited
US2882146A
Cited
US2860970A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1968-03-15 | 1968-09-14 | 1969-03-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-03-15 | 1972-09-14 | 1973-03-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-03-15 | 1976-09-14 | 1977-03-16 | $7700.00 | Window Closed / Lapsed |