Patent US5392775A successfully refreshed from Google Patents.
US2964399A
Expired / Lapsed
US
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Tantalum-titanium corrosion resistant alloy
Assignee: Titanium Metals Corp
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Filing: 1959-06-25
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Granted: 1960-12-13
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Expires: 1979-06-25
Abstract
No abstract record available.
Inventors
- 👤 Leland R Lyons
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 22:43
CPC Classifications
C; C22; C22C; C22C27/00; C22C27/02; C22C14/00; C22C16/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
47 words
A CORROSION RESISTANT ALLOY CONSISTING ESSENTIALLY OF MORE THAN 40% AND UP TO ABOUT 65% IN THE AGGREGATE OF TANTALUM AND COLUMBIUM, WITH THE COLUMBIUM PRESENT IN AMOUNT MORE THAN ABOUT 5% AND LESS THAN ONE-HALF THE AGGREGATE AMOUNT OF TANTALUM AND COLUMBIUM, BALANCE SUBSTANTIALLY ALL TITANIUM.
Claim 2
Dependent Claim
47 words
A CORROSION RESISTANT ALLOY CONSISTING ESSENTIALLY OF MORE THAN 40% AND UP TO ABOUT 65% IN THE AGGREGATE OF TANTALUM AND COLUMBIUM, WITH THE COLUMBIUM PRESENT IN AMOUNT MORE THAN ABOUT 5% AND LESS THAN ONE-HALF THE AGGREGATE AMOUNT OF TANTALUM AND COLUMBIUM, BALANCE SUBSTANTIALLY ALL TITANIUM.
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) | 1963-12-13 | 1964-06-13 | 1964-12-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-12-13 | 1968-06-13 | 1968-12-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-12-13 | 1972-06-13 | 1972-12-13 | $7700.00 | Window Closed / Lapsed |