US3792990A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Alloy for superconductive magnet
Assignee: National Institute for Materials Science
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Filing: 1972-11-28
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Granted: 1974-02-19
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Expires: 1992-11-28
Abstract
Abstract A ternary alloy, suitable for superconductive magnets, contains 30-90 atomic percent vanadium, 5-65 atomic percent hafnium, and less than 40 atomic percent niobium.
Inventors
- 👤 K Tachikawa
- 👤 K Inoue
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 14:30
CPC Classifications
H; H10; H10N; H10N60/00; H10N60/80; H10N60/85; C; C22; C22C; C22C27/00; C22C27/02; C22C27/025
Claims Analysis
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References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1977-02-18 | 1977-08-20 | 1978-02-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-02-18 | 1981-08-20 | 1982-02-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-02-18 | 1985-08-20 | 1986-02-19 | $7700.00 | Window Closed / Lapsed |