US3213027A
Expired / Lapsed
US
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Ferroelectric device, ferroelectric body and method of fabrication thereof
Assignee: RCA Corp
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Filing: 1962-03-30
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Granted: 1965-10-19
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Expires: 1982-03-30
Abstract
No abstract record available.
Inventors
- 👤 Fatuzzo Ennio
- 👤 Harbeke Gunter
- 👤 Ruppel Wolfgang
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 09:06
CPC Classifications
H; H03; H03K; H03K3/00; H03K3/02; H03K3/45; H01; H01G; H01G7/00; H01G7/02; H01G7/028; H01G7/06; Y; Y10; Y10T; Y10T428/00; Y10T428/249921; Y10T428/26; Y10T428/268; Y10T428/29; Y10T428/2913; Y10T428/2933
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
54 words
A FERROELECTRIC COMPOSITION CONSISTING ESSENTIALLY OF ACICULAR PARTICLES OF A FERROELECTRIC MATERIAL IN A DIELECTRIC BINDER THEREFOR, SAID PARTICLES HAVING A LENGTH-TO-WIDTH RATIO GREATER THAN ABOUT 2 TO 1, SAID PARTICLES CONSTITUTING 50 TO 95 WEIGHT PERCENT OF SAID BODY, SAID PARTICLES BEING ALIGNED WITH THEIR LONG GEOMETRIC AXES PREDOMINANTLY IN A COMMON DIRECTION.
Claim 2
Dependent Claim
54 words
A FERROELECTRIC COMPOSITION CONSISTING ESSENTIALLY OF ACICULAR PARTICLES OF A FERROELECTRIC MATERIAL IN A DIELECTRIC BINDER THEREFOR, SAID PARTICLES HAVING A LENGTH-TO-WIDTH RATIO GREATER THAN ABOUT 2 TO 1, SAID PARTICLES CONSTITUTING 50 TO 95 WEIGHT PERCENT OF SAID BODY, SAID PARTICLES BEING ALIGNED WITH THEIR LONG GEOMETRIC AXES PREDOMINANTLY IN A COMMON DIRECTION.
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) | 1968-10-18 | 1969-04-19 | 1969-10-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-10-18 | 1973-04-19 | 1973-10-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-10-18 | 1977-04-19 | 1977-10-19 | $7700.00 | Window Closed / Lapsed |