US3271205A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Zirconium base alloys
Assignee: United Kingdom Atomic Energy Authority
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Filing: 1964-03-23
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Granted: 1966-09-06
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Expires: 1984-03-23
Abstract
No abstract record available.
Inventors
- 👤 Winton John
- 👤 Murgatroyd Robert
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 18:28
CPC Classifications
C; C22; C22F; C22F1/00; C22F1/02; C22C; C22C16/00; C22F1/16; C22F1/18; C22F1/186; Y; Y10; Y10S; Y10S376/00; Y10S376/90
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
68 words
A METHOD FOR STRENGTHENING A ZIRCONIUM BASE ALLOY CONTAINING NIOBIUM WHICH COMPRISES INTRODUCING OXYGEN INTO THE ALLLOY TO GIVE AN OXYGEN CONTENT IN THE RANGE 1000 TO 2000 PARTS PER MILLION BY WEIGHT, RAISING THE ALLOY TO A SUFFICIENTLY HIGH TEMPERATURE TO EFFECT CONVERSION PREDOMINANTLY TO THE BETA PHASE QUENCHING THE ALLOY FROM THAT TEMPERATUE, AND SUBSEQUENTLY AGEING THE ALLOY FOR A PERIOD IN EXCESS OF TWO HOURS.
Claim 2
Independent Claim
68 words
A METHOD FOR STRENGTHENING A ZIRCONIUM BASE ALLOY CONTAINING NIOBIUM WHICH COMPRISES INTRODUCING OXYGEN INTO THE ALLLOY TO GIVE AN OXYGEN CONTENT IN THE RANGE 1000 TO 2000 PARTS PER MILLION BY WEIGHT, RAISING THE ALLOY TO A SUFFICIENTLY HIGH TEMPERATURE TO EFFECT CONVERSION PREDOMINANTLY TO THE BETA PHASE QUENCHING THE ALLOY FROM THAT TEMPERATUE, AND SUBSEQUENTLY AGEING THE ALLOY FOR A PERIOD IN EXCESS OF TWO HOURS.
Claim 3
Dependent Claim
49 words
A BINARY ALLOY OF ZIRCONIUM WITH 1 TO 4% BY WEIGHT OF NIOBIUM AND HAVING AN OXYGEN CONTENT IN THE RANGE 1000 TO 2000 PARTS MILLION BY WEIGHT, SUCH ALLOY BEING PREDOMINANTLY OF MARTENSITICALLY TRANSFORMED BETA PHASE WITH A FINE DISPERSION OF A SECOND PHASE PRECIPITATE RICH IN NIOBIUM.
Claim 4
Dependent Claim
49 words
A BINARY ALLOY OF ZIRCONIUM WITH 1 TO 4% BY WEIGHT OF NIOBIUM AND HAVING AN OXYGEN CONTENT IN THE RANGE 1000 TO 2000 PARTS MILLION BY WEIGHT, SUCH ALLOY BEING PREDOMINANTLY OF MARTENSITICALLY TRANSFORMED BETA PHASE WITH A FINE DISPERSION OF A SECOND PHASE PRECIPITATE RICH IN NIOBIUM.
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) | 1969-09-05 | 1970-03-07 | 1970-09-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-09-05 | 1974-03-07 | 1974-09-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-09-05 | 1978-03-07 | 1978-09-06 | $7700.00 | Window Closed / Lapsed |