Patent DE674283C successfully refreshed from Google Patents.
Patent US3165651A successfully refreshed from Google Patents.
US3165651A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Piezoelectric crystal apparatus
Assignee: Individual
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Filing: 1959-12-01
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Granted: 1965-01-12
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Expires: 1979-12-01
Abstract
No abstract record available.
Inventors
- 👤 Rudolf H Bechmann
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 22:36
CPC Classifications
H; H03; H03H; H03H9/00; H03H9/15; H03H9/17; H03H9/19
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
97 words
A THICKNESS-SHEAR MODE PIEZOELECTRIC CRYSTAL ELEMENT ADAPTED TO VIBRATE IN AN OSCILLATING CIRCUIT, MEANS FOR PROVIDING AN ELECTRIC FIELD PARALLEL TO THE MAJOR SURFACES OF SAID CRYSTAL ELEMENT COMPRISING A PAIR OF DISCRETE, ELECTRODES EACH PARTIALLY CONVERING BOTH OF SAID MAJOR SURFACES AND CONTINUOUS OVER THE EDGES OF SAID CRYSTAL ELEMENT, THE AREAS ON SAID MAJOR SURFACES COVERED BY SAID ELECTRODES BEING CO-EXTENSIVE, THE ENDS OF SAID ELECTRODES BEING SPACED FROM EACH OTHER TO FORM RESPECTIVELY MUTUALLY OPPOSING UNCOVERED PORTIONS ON SAID MAJOR SURFACES, SAID UNCOVERED PORTIONS BEING SUBSTANTIALLY PERPENDICULAR TO THE Z''-AXIS OF SAID CRYATAL ELEMENT.
Claim 2
Dependent Claim
97 words
A THICKNESS-SHEAR MODE PIEZOELECTRIC CRYSTAL ELEMENT ADAPTED TO VIBRATE IN AN OSCILLATING CIRCUIT, MEANS FOR PROVIDING AN ELECTRIC FIELD PARALLEL TO THE MAJOR SURFACES OF SAID CRYSTAL ELEMENT COMPRISING A PAIR OF DISCRETE, ELECTRODES EACH PARTIALLY CONVERING BOTH OF SAID MAJOR SURFACES AND CONTINUOUS OVER THE EDGES OF SAID CRYSTAL ELEMENT, THE AREAS ON SAID MAJOR SURFACES COVERED BY SAID ELECTRODES BEING CO-EXTENSIVE, THE ENDS OF SAID ELECTRODES BEING SPACED FROM EACH OTHER TO FORM RESPECTIVELY MUTUALLY OPPOSING UNCOVERED PORTIONS ON SAID MAJOR SURFACES, SAID UNCOVERED PORTIONS BEING SUBSTANTIALLY PERPENDICULAR TO THE Z''-AXIS OF SAID CRYATAL ELEMENT.
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) | 1968-01-12 | 1968-07-13 | 1969-01-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-01-12 | 1972-07-13 | 1973-01-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-01-12 | 1976-07-13 | 1977-01-12 | $7700.00 | Window Closed / Lapsed |