US3046529A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Ferroelectric memory systems
Assignee: RCA Corp
•
Filing: 1958-06-05
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Granted: 1962-07-24
•
Expires: 1978-06-05
Abstract
No abstract record available.
Inventors
- 👤 George R Briggs
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 15:58
CPC Classifications
G; G11; G11C; G11C11/00; G11C11/21; G11C11/22
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
67 words
IN A MEMORY SYSTEM, THE COMBINATION OF A FERROELECTRIC ELEMENT HAVING TWO STATES OF APPRECIABLE CHARGE REMANENCE, AN ELECTROLUMINESCENT ELEMENT ELECTRICALLY CONNECTED TO SAID FERROELECTRIC ELEMENT, AND MEANS FOR APPLYING FIRST AND SECOND EXCITATIONS TO SAID FERROELECTRIC ELEMENT TO SUCCESSIVELY CHANGE THE CHARGE THEREIN BACK AND FORTH BETWEEN SAID REMANENT STATES, SAID CHANGES OF CHARGE BEING SUCCESSIVELY TRANSFERRED TO AND FROM SAID ELECTROLUMINESCENT ELEMENT, SAID ELECTROLUMINESCENT ELE-
Claim 2
Dependent Claim
67 words
IN A MEMORY SYSTEM, THE COMBINATION OF A FERROELECTRIC ELEMENT HAVING TWO STATES OF APPRECIABLE CHARGE REMANENCE, AN ELECTROLUMINESCENT ELEMENT ELECTRICALLY CONNECTED TO SAID FERROELECTRIC ELEMENT, AND MEANS FOR APPLYING FIRST AND SECOND EXCITATIONS TO SAID FERROELECTRIC ELEMENT TO SUCCESSIVELY CHANGE THE CHARGE THEREIN BACK AND FORTH BETWEEN SAID REMANENT STATES, SAID CHANGES OF CHARGE BEING SUCCESSIVELY TRANSFERRED TO AND FROM SAID ELECTROLUMINESCENT ELEMENT, SAID ELECTROLUMINESCENT ELE-
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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) | 1965-07-23 | 1966-01-22 | 1966-07-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-07-23 | 1970-01-22 | 1970-07-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-07-23 | 1974-01-22 | 1974-07-24 | $7700.00 | Window Closed / Lapsed |