US3219583A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Ferroelectric ceramic and transducer embodying same
Assignee: Clevite Corp
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Filing: 1963-01-16
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Granted: 1965-11-23
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Expires: 1983-01-16
Abstract
No abstract record available.
Inventors
- 👤 Jr William R Cook
- 👤 Jaffe Hans
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 13:29
CPC Classifications
H; H03; H03H; H03H9/00; H03H9/15; H03H9/17; H03H9/176; C; C04; C04B; C04B35/00; C04B35/01; C04B35/46; C04B35/48; C04B35/50; C04B35/51; H10; H10N; H10N30/00; H10N30/80; H10N30/85; H10N30/853; H10N30/8548; H10N30/8554
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
68 words
A FERROELECTRIC CREAMIC COMPOSITION CONSISTING ESSENTIALLY OF A MATERIAL SELECTED FROM THE AREA ABCD OF FIGURE 3 AND CONTAINING AT LEAST ONE ELEMENT SELECTED FROM THE GROUP CONSISTING OF POTASSIUM, SCANDIUM AND INDIUM IN AN AMOUNT SUFFICIENT TO INCREASE THE ABILITY OF THE CERAMIC TO WITHSTAND DEPOLING, DECREASE THE DIELECTRIC LOSSES OF THE CERAMIC, AND INCREASE THE MECHANICAL Q TO THEREBY DECREASE THE MECHANICAL LOSSES OF THE CERAMIC.
Claim 2
Dependent Claim
68 words
A FERROELECTRIC CREAMIC COMPOSITION CONSISTING ESSENTIALLY OF A MATERIAL SELECTED FROM THE AREA ABCD OF FIGURE 3 AND CONTAINING AT LEAST ONE ELEMENT SELECTED FROM THE GROUP CONSISTING OF POTASSIUM, SCANDIUM AND INDIUM IN AN AMOUNT SUFFICIENT TO INCREASE THE ABILITY OF THE CERAMIC TO WITHSTAND DEPOLING, DECREASE THE DIELECTRIC LOSSES OF THE CERAMIC, AND INCREASE THE MECHANICAL Q TO THEREBY DECREASE THE MECHANICAL LOSSES OF THE CERAMIC.
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) | 1968-11-22 | 1969-05-24 | 1969-11-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-11-22 | 1973-05-24 | 1973-11-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-11-22 | 1977-05-24 | 1977-11-23 | $7700.00 | Window Closed / Lapsed |