Patent US3622358A successfully refreshed from Google Patents.
US3622358A
Expired / Lapsed
US
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Ceramic dielectric compositions
Assignee: TDK Corp
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Filing: 1968-11-25
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Granted: 1971-11-23
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Expires: 1988-11-25
Abstract
Abstract The ceramic dielectric materials of the present invention consist of a ternary solid solution CaTi03-PbTi03-La203.2Ti02 and CaTiSiO5, a part of which forms a solid solution with the said ternary system. The said ceramic materials are suitable as temperature compensating capacitors.
Inventors
- 👤 Tsundehiko Yoshioka
- 👤 Hishashi Sato
- 👤 Naoki Suda
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 17:32
CPC Classifications
C; C04; C04B; C04B35/00; C04B35/01; C04B35/46; C04B35/462; C04B35/465
Claims Analysis
Total Claims: 0
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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) | 1974-11-22 | 1975-05-24 | 1975-11-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-11-22 | 1979-05-24 | 1979-11-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-11-22 | 1983-05-24 | 1983-11-23 | $7700.00 | Window Closed / Lapsed |