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US3352697A
Expired / Lapsed
US
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Ceramic dielectrics
Assignee: TDK Corp
•
Filing: 1964-05-12
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Granted: 1967-11-14
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Expires: 1984-05-12
Abstract
No abstract record available.
Inventors
- 👤 Fujiwara Shinobu
- 👤 Hayashi Shigekazu
- 👤 Kawakami Kiyoto
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 16:46
CPC Classifications
C; C04; C04B; C04B35/00; C04B35/01; C04B35/46; C04B35/462; C04B35/475; C04B35/465; C04B35/47
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
17 words
CERAMIC DIELECTRIC CONSISTING OF A SINTERED MIXTURE OF SRTIO3, BI2O3 AND TIO2 IN THE WEIGHT PROPORTION SRTIO3:BI2O3:TIO2=22:58:20.
Claim 2
Dependent Claim
17 words
CERAMIC DIELECTRIC CONSISTING OF A SINTERED MIXTURE OF SRTIO3, BI2O3 AND TIO2 IN THE WEIGHT PROPORTION SRTIO3:BI2O3:TIO2=22:58:20.
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) | 1970-11-13 | 1971-05-15 | 1971-11-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-11-13 | 1975-05-15 | 1975-11-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-11-13 | 1979-05-15 | 1979-11-14 | $7700.00 | Window Closed / Lapsed |