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Patent US3536625A successfully refreshed from Google Patents.
US3536625A
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Piezoelectric ceramic composition
Assignee: Fujitsu Ltd
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Filing: 1967-10-25
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Granted: 1970-10-27
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Expires: 1987-10-25
Abstract
No abstract record available.
Inventors
- 👤 Kyohei Murakawa
- 👤 Koichi Niwa
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 22:45
CPC Classifications
C; C04; C04B; C04B35/00; C04B35/01; C04B35/48; C04B35/49; C04B35/491; C04B35/493; C04B35/495; C04B35/497; C04B35/499; C04B35/622; C04B35/626; C04B35/62605; C04B35/62685; C04B2235/00; C04B2235/02; C04B2235/30; C04B2235/32; C04B2235/3205; C04B2235/3206; C04B2235/3224; C04B2235/3227; C04B2235/3231; C04B2235/3241; C04B2235/3244; C04B2235/3248; C04B2235/3251; C04B2235/3258; C04B2235/3262; C04B2235/3267; C04B2235/327; C04B2235/3272; C04B2235/34; C04B2235/3418; C04B2235/65; C04B2235/656; C04B2235/70; C04B2235/74; C04B2235/76; C04B2235/761; C04B2235/762; C04B2235/765; C04B2235/768; C04B2235/77
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US3068177A
Cited
US3268453A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-10-26 | 1974-04-27 | 1974-10-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-10-26 | 1978-04-27 | 1978-10-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-10-26 | 1982-04-27 | 1982-10-27 | $7700.00 | Window Closed / Lapsed |