US3686041A
Expired / Lapsed
US
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Method of producing titanium alloys having an ultrafine grain size and product produced thereby
Assignee: General Electric Co
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Filing: 1971-02-17
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Granted: 1972-08-22
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Expires: 1991-02-17
Abstract
Abstract A PROCESS IS DISCLOSED FOR PRODUCING ULTRAFINE GRAINED TITANIUM ALLOY MICROSTRUCTURES WHICH INVOLVES HEATING THE TITANIUM ALLOY BODY TO A TEMPERATURE BELOW THE ALLOY''S BETA TRANUS TEMPERATURE BUT ABOVE ITS MARTENSITIC TRANSFORMATION TEMPERATURE, HOT WORKING THE HEATED ALLOY BODY AS ITS TEMPERATURE DECREASES, QUENCHING, AND REPEATING THE CYCLE AT LEAST ONCE.
Inventors
- 👤 Daeyong Lee
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 08:24
CPC Classifications
C; C22; C22F; C22F1/00; C22F1/16; C22F1/18; C22F1/183
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1975-08-22 | 1976-02-21 | 1976-08-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-08-22 | 1980-02-21 | 1980-08-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-08-22 | 1984-02-21 | 1984-08-22 | $7700.00 | Window Closed / Lapsed |