Processing of cores for circuit boards or cards
US4918812A · kind A · utility
1Cited by
4References
7Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Jun 29, 1988 |
| Grant date | Apr 24, 1990 |
| Priority date | — |
| Expiry date | Jun 29, 2008 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T29/49812
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
Two cores for circuit boards or cards are simultaneously processed. In particular, two cores are provided wherein each is a dielectric material having conductive planes on both major surfaces thereof. The two cores are temporarily fixed together by sealing the peripheral face planes thereof. The two external conductive planes are then simultaneously processed to thereby form signal patterns. The seal is then removed from the peripheral face planes and the two cores are separated from each other, thereby simultaneously providing the two cores.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.