US3294594A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of imparting corrosion resistance to zirconium base alloys
Assignee: Millennium Petrochemicals Inc
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Filing: 1963-11-08
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Granted: 1966-12-27
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Expires: 1983-11-08
Abstract
No abstract record available.
Inventors
- 👤 Bertea Octavian
- 👤 Stanley R Seagle
- 👤 James R Gross
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 20:36
CPC Classifications
C; C22; C22C; C22C16/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
72 words
THE METHOD OF INCREASING THE CORROSION RESISTANCE, AS EVIDENCED BY DECREASING THE WEIGHT GAIN AT LEAST 13.2% WHEN EXPOSED TO 750*F-150 P.S.G. STEAM FOR 15 DAYS, OF WROUGHT ZIRCONIUM BASE ALLOY PRODUCTS CONTAINING ABOUT 1 TO 20 WEIGHT PERCENT COLUMBIUM HAVING ELEVATED TEMPERATURE YIELD STRENGTHS AT 900*F. BETWEEN 28,000 AND 53,000 P.S.I., WHICH COMPRISES THE STEPS OF HOT WORKING AND ANNEALING THE ALLOY AND FINALLY COLD WORKING THE SURFACE OF THE ALLOY.
Claim 2
Independent Claim
72 words
THE METHOD OF INCREASING THE CORROSION RESISTANCE, AS EVIDENCED BY DECREASING THE WEIGHT GAIN AT LEAST 13.2% WHEN EXPOSED TO 750*F-150 P.S.G. STEAM FOR 15 DAYS, OF WROUGHT ZIRCONIUM BASE ALLOY PRODUCTS CONTAINING ABOUT 1 TO 20 WEIGHT PERCENT COLUMBIUM HAVING ELEVATED TEMPERATURE YIELD STRENGTHS AT 900*F. BETWEEN 28,000 AND 53,000 P.S.I., WHICH COMPRISES THE STEPS OF HOT WORKING AND ANNEALING THE ALLOY AND FINALLY COLD WORKING THE SURFACE OF THE ALLOY.
References Cited (Backward Citations)
US2772964A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-12-26 | 1970-06-27 | 1970-12-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-12-26 | 1974-06-27 | 1974-12-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-12-26 | 1978-06-27 | 1978-12-27 | $7700.00 | Window Closed / Lapsed |