US2928032A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Activation of ferroelectric materials
Assignee: Bendix Aviation Corp
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Filing: 1956-12-07
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Granted: 1960-03-08
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Expires: 1976-12-07
Abstract
No abstract record available.
Inventors
- 👤 William A Daniel
- 👤 Brownlee B Gauld
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 04:02
CPC Classifications
H; H01; H01G; H01G7/00; H01G7/02; Y; Y10; Y10T; Y10T29/00; Y10T29/42
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
33 words
THE METHOD OF ACTIVATING A SOLID POLYCRYSTALLINE FERROELECTRIC BODY WHICH COMPRISES SIMULTANEOUSLY PRODUCING VARYING INTERNAL MECHANICAL STRAINS OF SUBSTANTIAL MAGNITUDE IN THE BODY WHILE MAINTAINING A UNIDIRECTIONAL ELECTRIC FIELD THEREIN OF ACTIVALTING MAGNITUDE.
Claim 2
Independent Claim
33 words
THE METHOD OF ACTIVATING A SOLID POLYCRYSTALLINE FERROELECTRIC BODY WHICH COMPRISES SIMULTANEOUSLY PRODUCING VARYING INTERNAL MECHANICAL STRAINS OF SUBSTANTIAL MAGNITUDE IN THE BODY WHILE MAINTAINING A UNIDIRECTIONAL ELECTRIC FIELD THEREIN OF ACTIVALTING MAGNITUDE.
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) | 1963-03-08 | 1963-09-07 | 1964-03-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-03-08 | 1967-09-07 | 1968-03-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-03-08 | 1971-09-07 | 1972-03-08 | $7700.00 | Window Closed / Lapsed |