US3142645A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Ferromagnetic, ceramic body with a high quality factor at high frequency
Assignee: Steatit Magnesia AG
•
Filing: 1958-08-11
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Granted: 1964-07-28
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Expires: 1978-08-11
Abstract
No abstract record available.
Inventors
- 👤 Zerbes Georg
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 01:28
CPC Classifications
C; C04; C04B; C04B35/00; C04B35/01; C04B35/26; C04B35/265
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2656319A
Cited
US2700023A
Cited
US2736708A
Cited
US2723239A
Cited
GB756374A
Cited
US2925388A
Cited
GB752659A
Cited
GB751623A
Cited
FR1100865A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1967-07-28 | 1968-01-27 | 1968-07-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-07-28 | 1972-01-27 | 1972-07-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-07-28 | 1976-01-27 | 1976-07-28 | $7700.00 | Window Closed / Lapsed |