Patent US3197744A successfully refreshed from Google Patents.
US3197744A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Ferroelectric storage circuits
Assignee: RCA Corp
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Filing: 1963-12-04
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Granted: 1965-07-27
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Expires: 1983-12-04
Abstract
No abstract record available.
Inventors
- 👤 Bernard J Lechner
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 12:22
CPC Classifications
G; G11; G11C; G11C11/00; G11C11/21; G11C11/22; G11C11/42
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
175 words
A TRANSCHARGER CIRCUIT COMPRISING, IN COMBINATION: A BRIDGE NETWORK HAVING FOUR LEGS, THE FIRST AND SECOND LEGS EACH INCLUDING A FERROELECTRIC ELEMENT, AND AT LEAST ONE OF SAID FIRST AND SECOND LEGS ALSO INCLUDING A LOAD ELEMENT IN SERIES WITH THE FERROELECTRIC ELEMENT, AND THE THIRD AND FOURTH LEGS COMPRISING TOGETHER A SUBSTANTIALLY BALANCED ALTERNATING VOLTAGE SOURCE WHICH IS CONNECTED AT THE CONNECTION BETWEEN THE THIRD AND FOURTH LEGS TO A POINT OF REFERENCE POTENTIAL; MEANS COUPLED TO SAID BRIDGE NETWORK FOR APPLYING A PULSE THERETO FOR CAUSING THE TWO FERROELECTRIC ELEMENTS TO ASSUME AN UNBLOCKED CONDITION, WHEREBY UPON TERMINATION OF SAID PULSE THEY TEND TO PRESENT A LOW INPEDANCE TO SAID SOURCE; MEANS COUPLED TO SAID BRIDGE NETWORK FOR APPLYING A PULSE THERETO FOR CAUSING THE TWO FERROELECTRIC ELE MENTS TO ASSUME A BLOCKED CONDITION, WHEREBY UPON TERMINATION OF SAID LAST-NAMED PULSE THEY PRESENT A HIGH IMPEDANCE TO SAID SOURCE; AND A THIRD FERROELECTRIC ELEMENT COUPLED BETWEEN THE JUNCTION OF THE FIRST AND SECOND LEGS OF THE BRIDGE AND SAID POINT OF REFERENCE POTENTIAL.
Claim 2
Dependent Claim
175 words
A TRANSCHARGER CIRCUIT COMPRISING, IN COMBINATION: A BRIDGE NETWORK HAVING FOUR LEGS, THE FIRST AND SECOND LEGS EACH INCLUDING A FERROELECTRIC ELEMENT, AND AT LEAST ONE OF SAID FIRST AND SECOND LEGS ALSO INCLUDING A LOAD ELEMENT IN SERIES WITH THE FERROELECTRIC ELEMENT, AND THE THIRD AND FOURTH LEGS COMPRISING TOGETHER A SUBSTANTIALLY BALANCED ALTERNATING VOLTAGE SOURCE WHICH IS CONNECTED AT THE CONNECTION BETWEEN THE THIRD AND FOURTH LEGS TO A POINT OF REFERENCE POTENTIAL; MEANS COUPLED TO SAID BRIDGE NETWORK FOR APPLYING A PULSE THERETO FOR CAUSING THE TWO FERROELECTRIC ELEMENTS TO ASSUME AN UNBLOCKED CONDITION, WHEREBY UPON TERMINATION OF SAID PULSE THEY TEND TO PRESENT A LOW INPEDANCE TO SAID SOURCE; MEANS COUPLED TO SAID BRIDGE NETWORK FOR APPLYING A PULSE THERETO FOR CAUSING THE TWO FERROELECTRIC ELE MENTS TO ASSUME A BLOCKED CONDITION, WHEREBY UPON TERMINATION OF SAID LAST-NAMED PULSE THEY PRESENT A HIGH IMPEDANCE TO SAID SOURCE; AND A THIRD FERROELECTRIC ELEMENT COUPLED BETWEEN THE JUNCTION OF THE FIRST AND SECOND LEGS OF THE BRIDGE AND SAID POINT OF REFERENCE POTENTIAL.
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) | 1968-07-26 | 1969-01-25 | 1969-07-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-07-26 | 1973-01-25 | 1973-07-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-07-26 | 1977-01-25 | 1977-07-27 | $7700.00 | Window Closed / Lapsed |