Film
US10745531B2 · kind B2 · utility
0Cited by
7References
7Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jul 13, 2016 |
| Grant date | Aug 18, 2020 |
| Priority date | — |
| Expiry date | Jul 13, 2036 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/3154
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
The present invention provides a film having excellent heat resistance and a small difference between the permittivity at low temperatures and the permittivity at high temperatures. The present invention provides a film having a relative permittivity of 8 or more at a frequency of 1 kHz at 30° C., wherein the rate of change is −8 to +8% as calculated from a relative permittivity A at a frequency of 1 kHz at 30° C. and a relative permittivity B at a frequency of 1 kHz at 150° C. according to the following formula: Rate of change(%)=(B−A)/A×100.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.