Method of fabricating a circuit board and circuit board provided thereby
US4463084A · kind A · utility
11Cited by
7References
6Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Sep 30, 1982 |
| Grant date | Jul 31, 1984 |
| Priority date | — |
| Expiry date | Sep 30, 2002 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH05K2203/1147
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A circuit board such as a code disk having a smooth contact surface and a minute pattern is fabricated by depositing an alumite film on an aluminum and selectively filling electrically nonconductive and conductive materials in the cells in the crystals of the alumite film.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.