US2708243A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Polycrystalline ceramic material
Assignee: Clevite Corp
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Filing: 1951-02-10
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Granted: 1955-05-10
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Expires: 1971-02-10
Abstract
No abstract record available.
Inventors
- 👤 Edwin J Brajer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 08:34
CPC Classifications
H; H04; H04R; H04R17/00; C; C04; C04B; C04B35/00; C04B35/01; C04B35/46; C04B35/462; C04B35/465; C04B35/468; C04B35/4682; H10; H10N; H10N30/00; H10N30/80; H10N30/85; H10N30/853
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
71 words
AN ELECTROMECHANICAL TRANSDUCER DEVICE, COMPRISING: A DIELECTRIC BODY OF A CERAMIC MATERIAL CONSISTING ESSENTIALLY OF BARIUM TITANATE IN AN AMOUNT GREATER THAN 96% AND LESS THAN 98.5% BY WEIGHT AND ZIRCONIA IN AN AMOUNT LESS THAN 4% AND GREATER THAN 1.5% BY WEIGHT; ELECTRODES ON OPPOSED SURFACES OF SAID BODY FOR TRANSLATING THE ELECTRICAL ENERGY TRANSDUCED THEREIN; AND MECHANICAL MEANS COUPLED TO SAID BODY FOR TRANSLATING THE MECHANICAL ENERGY TRANSDUCED THEREIN.
Claim 2
Dependent Claim
71 words
AN ELECTROMECHANICAL TRANSDUCER DEVICE, COMPRISING: A DIELECTRIC BODY OF A CERAMIC MATERIAL CONSISTING ESSENTIALLY OF BARIUM TITANATE IN AN AMOUNT GREATER THAN 96% AND LESS THAN 98.5% BY WEIGHT AND ZIRCONIA IN AN AMOUNT LESS THAN 4% AND GREATER THAN 1.5% BY WEIGHT; ELECTRODES ON OPPOSED SURFACES OF SAID BODY FOR TRANSLATING THE ELECTRICAL ENERGY TRANSDUCED THEREIN; AND MECHANICAL MEANS COUPLED TO SAID BODY FOR TRANSLATING THE MECHANICAL ENERGY TRANSDUCED THEREIN.
References Cited (Backward Citations)
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Cited
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Cited
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Cited
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Cited
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Cited
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Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1958-05-09 | 1958-11-08 | 1959-05-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1962-05-09 | 1962-11-08 | 1963-05-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1966-05-09 | 1966-11-08 | 1967-05-10 | $7700.00 | Window Closed / Lapsed |