US3179926A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Ferroelectric logic circuits
Assignee: AT&T Inc
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Filing: 1960-09-27
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Granted: 1965-04-20
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Expires: 1980-09-27
Abstract
No abstract record available.
Inventors
- 👤 Robert M Wolfe
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 14:09
CPC Classifications
H; H03; H03K; H03K19/00; H03K19/02; H03K19/185
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
119 words
AN ELECTRICAL CIRCUIT COMPRISING A PLURALITY OF INPUT FERROELECTRIC CAPACITORS, ONE ELECTRODE OF EACH OF SAID CAPACITORS BEING DIRECTLY CONNECTED TO A COMMON TERMINAL, ALL OF SAID CAPACITORS HAVING SUBSTANTIALLY THE SAME HYSTERESIS CHARACTERISTICS, MEANS FOR SETTING THE FERROELECTRIC MATERIAL OF EACH OF SAID CAPACITORS TO A PREDETERMINED CONDITION OF REMANENT POLARIZATION, A PLURALITY OF MEANS FOR APPLYING INPUT SIGNALS SELECTIVELY TO THE OTHER ELECTRODES OF RESPECTIVE ONES OF SAID INPUT CAPACITORS, FIRST FERROELECTRIC MEANS CONNECTED TO SAID COMMON TERMINAL FOR DETECTING THE APPLICATION OF AN INPUT SIGNAL TO ANY ONE OF SAID INPUT CAPACITORS, AND SECOND FERROELECTRIC MEANS ALSO CONNECTED TO SAID COMMON TERMINAL FOR DETECTING THE APPLICATION OF INPUT SIGNALS TO ANY TWO OF SAID INPUT CAPACITORS.
Claim 2
Dependent Claim
119 words
AN ELECTRICAL CIRCUIT COMPRISING A PLURALITY OF INPUT FERROELECTRIC CAPACITORS, ONE ELECTRODE OF EACH OF SAID CAPACITORS BEING DIRECTLY CONNECTED TO A COMMON TERMINAL, ALL OF SAID CAPACITORS HAVING SUBSTANTIALLY THE SAME HYSTERESIS CHARACTERISTICS, MEANS FOR SETTING THE FERROELECTRIC MATERIAL OF EACH OF SAID CAPACITORS TO A PREDETERMINED CONDITION OF REMANENT POLARIZATION, A PLURALITY OF MEANS FOR APPLYING INPUT SIGNALS SELECTIVELY TO THE OTHER ELECTRODES OF RESPECTIVE ONES OF SAID INPUT CAPACITORS, FIRST FERROELECTRIC MEANS CONNECTED TO SAID COMMON TERMINAL FOR DETECTING THE APPLICATION OF AN INPUT SIGNAL TO ANY ONE OF SAID INPUT CAPACITORS, AND SECOND FERROELECTRIC MEANS ALSO CONNECTED TO SAID COMMON TERMINAL FOR DETECTING THE APPLICATION OF INPUT SIGNALS TO ANY TWO OF SAID INPUT CAPACITORS.
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) | 1968-04-19 | 1968-10-19 | 1969-04-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-04-19 | 1972-10-19 | 1973-04-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-04-19 | 1976-10-19 | 1977-04-20 | $7700.00 | Window Closed / Lapsed |