Patent US2813791A successfully refreshed from Google Patents.
US2813791A
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Method of reducing high temperature embrittlement of titanium alloys
Assignee: Chicago Dev Corp
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Filing: 1955-04-18
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Granted: 1957-11-19
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Expires: 1975-04-18
Abstract
No abstract record available.
Inventors
- 👤 William W Gullett
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 22:54
CPC Classifications
C; C22; C22C; C22C14/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
76 words
THE METHOD OF REDUCING HIGH-TEMPERATURE EMBRITTLEMENT OF TITANIUM ALLOYS CONTAINING ABOUT 0.1% OXYGEN, WHCH CONSISTS IN ADDING TO SUCH OXYGEN-CONTAINING ALLOY DURING MELTING, A SECOND TITANIUM ALLOY OF THE GROUP CONSISTING OF TITANIUM-BARIUM AND TITANIUM-STRONTIUM ALLOYS, SAID SECOND TITANIUM ALLOY BEING ADDED IN AN AMOUNT CORRESPONDING TO ABOUT 0.1% OF THE ALLOYING METAL OF SAID SECOND TITANIUM ALLOY, WHEREBY TO SUBSTANTIALLY ELIMINATE EMBRITTLEMENT OF THE RESULTING ALLOY BY QUENCHING FROM ABOUT 800*C. AFTER CASTING AND FABRICATION.
Claim 2
Independent Claim
76 words
THE METHOD OF REDUCING HIGH-TEMPERATURE EMBRITTLEMENT OF TITANIUM ALLOYS CONTAINING ABOUT 0.1% OXYGEN, WHCH CONSISTS IN ADDING TO SUCH OXYGEN-CONTAINING ALLOY DURING MELTING, A SECOND TITANIUM ALLOY OF THE GROUP CONSISTING OF TITANIUM-BARIUM AND TITANIUM-STRONTIUM ALLOYS, SAID SECOND TITANIUM ALLOY BEING ADDED IN AN AMOUNT CORRESPONDING TO ABOUT 0.1% OF THE ALLOYING METAL OF SAID SECOND TITANIUM ALLOY, WHEREBY TO SUBSTANTIALLY ELIMINATE EMBRITTLEMENT OF THE RESULTING ALLOY BY QUENCHING FROM ABOUT 800*C. AFTER CASTING AND FABRICATION.
References Cited (Backward Citations)
US2675309A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1960-11-18 | 1961-05-20 | 1961-11-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-11-18 | 1965-05-20 | 1965-11-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-11-18 | 1969-05-20 | 1969-11-19 | $7700.00 | Window Closed / Lapsed |