Flexible printed circuit board base material
US4784901A · kind A · utility
38Cited by
8References
3Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Apr 13, 1987 |
| Grant date | Nov 15, 1988 |
| Priority date | — |
| Expiry date | Apr 13, 2007 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T442/3878
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A flexible base material for use in printed circuit boards is provided wherein a sheet of porous, expanded polytetrafluoroethylene is impregnated with a bismaleimide-triazine resin, and the resin is cured therein. The sheet may be laminated to a glass cloth and composites may be produced having a multiplicity of layers of such sheets and glass cloths.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.