US3567522A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of producing zirconium base alloys
Assignee: Westinghouse Electric Corp
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Filing: 1965-12-15
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Granted: 1971-03-02
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Expires: 1985-12-15
Abstract
Abstract A PROCESS FOR PRODUCING A ZIRCONIUM BASE ALLOY MEMBER HAVING IMPROVED TENSILE STRENGTH AND DUCTILITY PROPERTIES PRIOR TO NUCLEAR RADIATION BY FIRST COLD WORKING THE MEMBER TO INDUCE A 7% TO 20% STRAIN. THE MEMBER IS THEN HEAT TREATED AT TEMPERATURES LOWER THAN THE USUAL ANNEALING TEMPERATURES.
Inventors
- 👤 Kenneth C Thomas
- 👤 Robert J Allio
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 09:22
CPC Classifications
C; C22; C22F; C22F1/00; C22F1/16; C22F1/18; C22F1/186; C22C; C22C16/00; Y; Y10; Y10S; Y10S376/00; Y10S376/90
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) | 1974-03-01 | 1974-08-31 | 1975-03-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-03-01 | 1978-08-31 | 1979-03-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-03-01 | 1982-08-31 | 1983-03-02 | $7700.00 | Window Closed / Lapsed |