Patent US3422400A successfully refreshed from Google Patents.
US3422400A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Ferroelectric storage means
Assignee: Unisys Corp
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Filing: 1964-11-05
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Granted: 1969-01-14
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Expires: 1984-11-05
Abstract
No abstract record available.
Inventors
- 👤 Guido C Corijnen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 07:45
CPC Classifications
G; G11; G11C; G11C17/00; G11C17/04
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
125 words
A COMBINATION COMPRISING: STORAGE MEANS FOR STORING INFORMATION IN THE FORM OF A PATTERN OF ELECTRIC ENERGY AT PREDETERMINED LOCATIONS; READOUT MEANS FOR DETECTING THE PRESENCE OF SAID ELECTRICAL ENERGY AT ANY OF SAID PREDETERMINED LOCATIONS; SAID READOUT MEANS INCLUDING A FERROELECTRIC CAPACITOR FOR CHANGING ONE OF ITS CHARACTERISTICS IN THE PRESENCE OF SAID ENERGY, SAID READOUT MEANS FURTHER INCLUDING A SAMPLING MEANS FOR DETECTING IMPEDANCE OF SAID FERROELECTRIC CAPACITOR, SAID SAMPLING MEANS COMPRISING A SOURCE OF ALTERNATING CURRENT HAVING AN AMPLITUDE INSUFFICIENT BY ITSELF TO SATURATE SAID FERROELECTRIC CAPACITOR, WHEREBY SAID FERROELECTRIC CAPACITOR COUPLES AND DECOUPLES SAID ALTERNATING CURRENT TO THE OUTPUT TERMINALS OF SAID READOUT MEANS UNDER THE CONTROL OF SAID PATTERN OF ELECTRICAL ENERGY WHICH IS CAPABLE OF SATURATING SAID FERROELECTRIC CAPACITOR.
Claim 2
Dependent Claim
125 words
A COMBINATION COMPRISING: STORAGE MEANS FOR STORING INFORMATION IN THE FORM OF A PATTERN OF ELECTRIC ENERGY AT PREDETERMINED LOCATIONS; READOUT MEANS FOR DETECTING THE PRESENCE OF SAID ELECTRICAL ENERGY AT ANY OF SAID PREDETERMINED LOCATIONS; SAID READOUT MEANS INCLUDING A FERROELECTRIC CAPACITOR FOR CHANGING ONE OF ITS CHARACTERISTICS IN THE PRESENCE OF SAID ENERGY, SAID READOUT MEANS FURTHER INCLUDING A SAMPLING MEANS FOR DETECTING IMPEDANCE OF SAID FERROELECTRIC CAPACITOR, SAID SAMPLING MEANS COMPRISING A SOURCE OF ALTERNATING CURRENT HAVING AN AMPLITUDE INSUFFICIENT BY ITSELF TO SATURATE SAID FERROELECTRIC CAPACITOR, WHEREBY SAID FERROELECTRIC CAPACITOR COUPLES AND DECOUPLES SAID ALTERNATING CURRENT TO THE OUTPUT TERMINALS OF SAID READOUT MEANS UNDER THE CONTROL OF SAID PATTERN OF ELECTRICAL ENERGY WHICH IS CAPABLE OF SATURATING SAID FERROELECTRIC CAPACITOR.
References Cited (Backward Citations)
US3179926A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-01-14 | 1972-07-15 | 1973-01-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-01-14 | 1976-07-15 | 1977-01-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-01-14 | 1980-07-15 | 1981-01-14 | $7700.00 | Window Closed / Lapsed |