US3129184A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method for producing non-metallic magnetic materials
Assignee: Imperial Chemical Industries Ltd
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Filing: 1961-05-25
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Granted: 1964-04-14
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Expires: 1981-05-25
Abstract
No abstract record available.
Inventors
- 👤 Kenney Christopher Nigel
- 👤 Thornhill Raymond Spencer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 20:52
CPC Classifications
C; C04; C04B; C04B35/00; C04B35/01; C04B35/26; C04B35/2683; H; H01; H01F; H01F1/00; H01F1/01; H01F1/03; H01F1/0302; H01F1/0311; H01F1/0313; H01F1/0315
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
14 words
A PROCESS FOR THE MANUFACTURE OF A NON-METALLIC MAGNETIC COMPOUND HAVING THE GENERAL FORMULA
Claim 2
Dependent Claim
14 words
A PROCESS FOR THE MANUFACTURE OF A NON-METALLIC MAGNETIC COMPOUND HAVING THE GENERAL FORMULA
References Cited (Backward Citations)
US2978414A
Cited
GB793870A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1967-04-14 | 1967-10-14 | 1968-04-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-04-14 | 1971-10-14 | 1972-04-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-04-14 | 1975-10-14 | 1976-04-14 | $7700.00 | Window Closed / Lapsed |