Patent US3563897A successfully refreshed from Google Patents.
US3563897A
Expired / Lapsed
US
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Ferromagnetic garnet with stress insensitive b-h loop and method of making same
Assignee: Trans Tech Inc
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Filing: 1968-04-03
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Granted: 1971-02-16
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Expires: 1988-04-03
Abstract
Abstract YTTRIUM IRON GARNET FERRITES, WHEREIN THE INTRODUCTION OF CERIUM OXIDE INTO THE GARNET REDUCES THE MECHANICAL PRESSURE STRESS DEPENDENCE OF REMANENT MAGNETIZATION AND COERCIVE FORCE, ARE DISCLOSED.
Inventors
- 👤 Russell G West
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 06:47
CPC Classifications
C; C04; C04B; C04B35/00; C04B35/01; C04B35/26; C04B35/2675
Claims Analysis
Total Claims: 0
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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) | 1974-02-15 | 1974-08-17 | 1975-02-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-02-15 | 1978-08-17 | 1979-02-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-02-15 | 1982-08-17 | 1983-02-16 | $7700.00 | Window Closed / Lapsed |