Piezoelectric and pyroelectric polymer film and process for preparing same
US4308370A · kind A · utility
26Cited by
4References
9Claims
0Family size
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Key dates
| Filing date | Apr 21, 1980 |
| Grant date | Dec 29, 1981 |
| Priority date | — |
| Expiry date | Apr 21, 2000 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T29/42
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A process for preparing polyvinylidene fluoride type (PVDF) films having highly stable piezoelectricity and pyroelectricity, by stretching PVDF films, while causing corona discharge, across the electric field formed by discharging, to effect thereby to polarization of film.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.