Patent US2977219A successfully refreshed from Google Patents.
US2977219A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for purifying titanium
Assignee: Individual
•
Filing: 1957-09-30
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Granted: 1961-03-28
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Expires: 1977-09-30
Abstract
No abstract record available.
Inventors
- 👤 Edward J Chapin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 11:19
CPC Classifications
C; C22; C22B; C22B34/00; C22B34/10; C22B34/12; C22B34/1295
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
56 words
A PROCESS FOR REMOVING OXYGEN FROM SOLUTION IN TITANIUM CONTAINING THE SAME IN AMOUNT UP TO ABOUT 1% BY WEIGHT WHICH COMPRISES FORMING A MELT OF THE TITANIUM UNDER AN INERT ATMOSPHERE WITH AN AMOUNT OF THORIUM SUBSTANTIALLY THE CHEMICAL EQUIVALENT FOR THE DISSOLVED OXYGEN IN THE TITANIUM AND SOLIDIFYING THE MELT UNDER AN INERT ATMOSPHERE.
Claim 2
Dependent Claim
56 words
A PROCESS FOR REMOVING OXYGEN FROM SOLUTION IN TITANIUM CONTAINING THE SAME IN AMOUNT UP TO ABOUT 1% BY WEIGHT WHICH COMPRISES FORMING A MELT OF THE TITANIUM UNDER AN INERT ATMOSPHERE WITH AN AMOUNT OF THORIUM SUBSTANTIALLY THE CHEMICAL EQUIVALENT FOR THE DISSOLVED OXYGEN IN THE TITANIUM AND SOLIDIFYING THE MELT UNDER AN INERT ATMOSPHERE.
References Cited (Backward Citations)
US2773787A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1964-03-27 | 1964-09-26 | 1965-03-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-03-27 | 1968-09-26 | 1969-03-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-03-27 | 1972-09-26 | 1973-03-28 | $7700.00 | Window Closed / Lapsed |