US2694166A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Permanent magnet alloy
Assignee: Jessop William & Sons Ltd
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Filing: 1951-07-10
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Granted: 1954-11-09
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Expires: 1971-07-10
Abstract
No abstract record available.
Inventors
- 👤 Hadfield Dennis
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 04:08
CPC Classifications
C; C22; C22C; C22C38/00; C22C38/16
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
24 words
A MAGNETICALLY ANISOTROPIC MAGNET CONSISTING OF AN ALLOY OF THE FE-NI-AL-CO-CU-TYPE CONTAINING ABOUT 13.5% 0.5 TO 3.25% COLUMNIUM, WITH THE BALANCE SUBSTANTIALLY ALL IRON.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1957-11-08 | 1958-05-10 | 1958-11-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-11-08 | 1962-05-10 | 1962-11-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-11-08 | 1966-05-10 | 1966-11-09 | $7700.00 | Window Closed / Lapsed |