Patent US3682826A successfully refreshed from Google Patents.
US3682826A
Expired / Lapsed
US
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Oxide piezoelectric materials
Assignee: Toshiba Corp
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Filing: 1971-03-29
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Granted: 1972-08-08
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Expires: 1991-03-29
Abstract
Abstract TERNARY OXIDE PIEZOELECTRIC MATERIALS CONSISTING OF 0.5 TO 50.0 MOL PERCENT OF PB(ME1/2TE1/2)O3, 35.0 TO 57.0 MOL PERCENT PBTIO3 AND 15.0 TO 55.0 MOL PERCENT OF PBZRO3 (WHERE ME DENOTES AT LEAST ONE METAL OF THE GROUP OF MAGNESIUM AND ZINC).
Inventors
- 👤 Noboru Ichinose
- 👤 Harutoshi Egami
- 👤 Katsunori Yokoyama
- 👤 Yohachi Yamashita
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 09:23
CPC Classifications
C; C04; C04B; C04B35/00; C04B35/01; C04B35/46; C04B35/48; C04B35/50; C04B35/51; H; H10; H10N; H10N30/00; H10N30/80; H10N30/85; H10N30/853
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) | 1975-08-08 | 1976-02-07 | 1976-08-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-08-08 | 1980-02-07 | 1980-08-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-08-08 | 1984-02-07 | 1984-08-08 | $7700.00 | Window Closed / Lapsed |