US3573109A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Production of metal resistant to neutron irradiation
Assignee: United States Atomic Energy Commission
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Filing: 1969-04-24
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Granted: 1971-03-30
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Expires: 1989-04-24
Abstract
Abstract A PROCESS IS DISCLOSED FOR PRODUCING A METAL WHICH IS HIGHLY RESISTANT TO DAMAGE BY NEUTRON IRRADIATION. AUSTENITIC STAINLESS STEELS OR NICKEL-BASE ALLOYS, WHICH ALSO CONTAIN SUITABLE CARBIDE-FORMERS SUCH AS NIOBIUM (COLUMBIUM), TITANIUM, TANTALUM, OR ZIRCONIUM, ARE SUBJECTED TO A SERIES OF THERMAL AND MECHANICAL TREATMENTS, NAMELY: (1) SOLUTION HEAT TREATMENT AT A TEMPERATURE SUFFICIENTLY HIGH TO PLACE IN SOLID SOLUTION SUBSTANTIALLY ALL THE DISSOLVABLE CARBIDES, (2) QUENCHING AT A CONTROLLED RATE, (3) PLASTIC DEFORMATION AT OR NEAR ROOM TEMPERATURE, AND (4) PLASTIC DEFORMATION AT HIGH TEMPERATURE.
Inventors
- 👤 Ira S Levy
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 17:23
CPC Classifications
C; C22; C22C; C22C38/00; C22C38/18; C22C38/40; C22C38/48; C21; C21D; C21D8/00; C22C19/00; C22C19/03; C22C19/05; C22C19/051; C22C19/056; C22C38/50
Claims Analysis
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References Cited (Backward Citations)
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-03-29 | 1974-09-28 | 1975-03-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-03-29 | 1978-09-28 | 1979-03-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-03-29 | 1982-09-28 | 1983-03-30 | $7700.00 | Window Closed / Lapsed |