US3210607A
Expired / Lapsed
US
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Ferroelectric capacitor apparatus
Assignee: Texas Instruments Inc
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Filing: 1961-09-07
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Granted: 1965-10-05
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Expires: 1981-09-07
Abstract
No abstract record available.
Inventors
- 👤 Charles D Flanagan
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 06:49
CPC Classifications
H; H02; H02H; H02H5/00; H02H5/04; H01; H01G; H01G4/00; H01G4/002; H01G4/018; H01G4/20; H01G4/40
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
86 words
AN A.C. CONTROL CIRCUIT COMPRISING AN INDUCTANCE AND A CAPACITANCE, SAID INDUCTANCE AND SAID CAPACITANCE HAVING A CONFIGURATION IN THE CIRCUIT ADAPTED FOR SUBSTANTIAL RESONANCE APPROXIMATELY AT THE A.C. FREQUENCY, SAID CAPACITANCE COMPRISING CONDUCTIVE ELECTRODE PLATES A PLURALITY OF PLATES OF DIFFERENT FERROELECTRIC MATERIAL INTERPOSED BETWEEN SAID CONDUCTIVE PLATES, AT LEAST TWO OF SAID FERROELECTRIC MATERIALS HAVING SUBSTANTIALLY DIFFERENT CURIE TEMPERATURES, THE CAPACITIVE REACTANCE EXHIBITED BY SAID CAPACITANCE IN THE RANGE BETWEEN SAID CURIE TEMPERATURES CAUSING SAID CIRCUIT TO BE SUBSTANTIALLY RESONSNAT AT SAID A.C. FREQUENCY.
Claim 2
Dependent Claim
86 words
AN A.C. CONTROL CIRCUIT COMPRISING AN INDUCTANCE AND A CAPACITANCE, SAID INDUCTANCE AND SAID CAPACITANCE HAVING A CONFIGURATION IN THE CIRCUIT ADAPTED FOR SUBSTANTIAL RESONANCE APPROXIMATELY AT THE A.C. FREQUENCY, SAID CAPACITANCE COMPRISING CONDUCTIVE ELECTRODE PLATES A PLURALITY OF PLATES OF DIFFERENT FERROELECTRIC MATERIAL INTERPOSED BETWEEN SAID CONDUCTIVE PLATES, AT LEAST TWO OF SAID FERROELECTRIC MATERIALS HAVING SUBSTANTIALLY DIFFERENT CURIE TEMPERATURES, THE CAPACITIVE REACTANCE EXHIBITED BY SAID CAPACITANCE IN THE RANGE BETWEEN SAID CURIE TEMPERATURES CAUSING SAID CIRCUIT TO BE SUBSTANTIALLY RESONSNAT AT SAID A.C. FREQUENCY.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1968-10-04 | 1969-04-05 | 1969-10-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-10-04 | 1973-04-05 | 1973-10-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-10-04 | 1977-04-05 | 1977-10-05 | $7700.00 | Window Closed / Lapsed |