Insulating boards
US4241132A · kind A · utility
36Cited by
7References
14Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Aug 17, 1978 |
| Grant date | Dec 23, 1980 |
| Priority date | — |
| Expiry date | Aug 17, 1998 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T442/656
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
An insulating board has a polymeric reinforcement layer of fibrous material with a predetermined dielectric constant. A polymer is impregnated into said reinforcement layer and has a dielectric constant which is close to that of the dielectric constant of said fibrous material and the insulating board exhibits isotropic properties. A preselected desired dielectric constant or loss tangent can be built into the board by selection of fillers to preselect the dielectric constant or loss tangent without detracting from desired mechanical properties of the board.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.