US3362019A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Ferroelectric memory
Assignee: General Dynamics Corp
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Filing: 1966-07-15
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Granted: 1968-01-02
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Expires: 1986-07-15
Abstract
No abstract record available.
Inventors
- 👤 Joseph W Gratian
- 👤 Richard W Freytag
- 👤 Fred C Unterleitner
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 21:01
CPC Classifications
G; G11; G11C; G11C8/00; G11C8/005
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
123 words
A METHOD OF EMPLOYING A FERROELECTRIC MEMORY DEVICE HAVING A BODY COMPRISED OF FERROELECTRIC MATERIAL CAPABLE OF BEING PERMANENTLY POLARIZED BY MEANS OF 180* DOMAIN SWITCHING, MEANS FOR PROPAGATING A STRESS PULSE THROUGH SAID BODY, TWO SPACED ELECTRODES DISPOSED ADJACENT TO SAID BODY FOR ESTABLISHING AN ELECTRIC FIELD THEREIN WHEN ENERGIZED AND MEANS RESPONSIVE TO DATA TO BE STORED FOR COINCIDENTLY ESTABLISHING SAID STRESS PULSE AND ELECTRIC FIELD AT SELECTED INCREMENTS, WHICH METHOD COMPRISES (A) PROPAGATING A STRESS PULSE THROUGH SAID BODY TRANSVERSE TO THE DIRECTION OF SAID ELECTRIC FIELD, AND (B) SELECTIVELY ESTABLISHING IN AN INCREMENT OF SAID BODY AN ELECTRIC FIELD COINCIDENTLY WITH SAID STRESS PULSE THE COINCIDENT APPLICATION OF SAID FIELD AND STRESS PULSE BEING OF SUFFICIENT INTENSITY TO INFLUENCE
Claim 2
Independent Claim
123 words
A METHOD OF EMPLOYING A FERROELECTRIC MEMORY DEVICE HAVING A BODY COMPRISED OF FERROELECTRIC MATERIAL CAPABLE OF BEING PERMANENTLY POLARIZED BY MEANS OF 180* DOMAIN SWITCHING, MEANS FOR PROPAGATING A STRESS PULSE THROUGH SAID BODY, TWO SPACED ELECTRODES DISPOSED ADJACENT TO SAID BODY FOR ESTABLISHING AN ELECTRIC FIELD THEREIN WHEN ENERGIZED AND MEANS RESPONSIVE TO DATA TO BE STORED FOR COINCIDENTLY ESTABLISHING SAID STRESS PULSE AND ELECTRIC FIELD AT SELECTED INCREMENTS, WHICH METHOD COMPRISES (A) PROPAGATING A STRESS PULSE THROUGH SAID BODY TRANSVERSE TO THE DIRECTION OF SAID ELECTRIC FIELD, AND (B) SELECTIVELY ESTABLISHING IN AN INCREMENT OF SAID BODY AN ELECTRIC FIELD COINCIDENTLY WITH SAID STRESS PULSE THE COINCIDENT APPLICATION OF SAID FIELD AND STRESS PULSE BEING OF SUFFICIENT INTENSITY TO INFLUENCE
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) | 1971-01-01 | 1971-07-03 | 1972-01-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-01-01 | 1975-07-03 | 1976-01-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-01-01 | 1979-07-03 | 1980-01-02 | $7700.00 | Window Closed / Lapsed |