US3575736A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of rolling titanium alloys
Assignee: United States Department of the Air Force
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Filing: 1968-11-25
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Granted: 1971-04-20
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Expires: 1988-11-25
Abstract
Abstract A METHOD FOR ENHANCING THE STRENGTH TO DENSITY RATIO OF ALPHA-BETA TYPE TITANIUM ALLOYS. THE INCREASED STRENGTH DEMONSTRATED BY THE ALLOYS OF THIS INVENTION IS ACHIEVED BY FAVORABLY ALTERING THE CRYSTALLOGRAPHIC TEXTURE OF HE ALLOY. THE ALLOY TO BE TEXTURED IS HOT ROLLED IN AT LEAST THREE DIFFERENT ORIENTATIONS AT A TEMPERATURE WITHIN A RANGE OF FROM ABOUT 700* TO 1500*F. THIS RESULTS IN A REDUCTION IN THE CROSS-SECTIONAL AREA OF THE ALLOY BY ABOUT 60 TO 90%.
Inventors
- 👤 John M Fitzpatrick
- 👤 Aloysius T Davinroy
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 08:47
CPC Classifications
C; C22; C22F; C22F1/00; C22F1/16; C22F1/18; C22F1/183; B; B21; B21B; B21B3/00; Y; Y10; Y10S; Y10S72/00; Y10S72/70
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) | 1974-04-19 | 1974-10-19 | 1975-04-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-04-19 | 1978-10-19 | 1979-04-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-04-19 | 1982-10-19 | 1983-04-20 | $7700.00 | Window Closed / Lapsed |