Functionally gradient circuit board
US5294477A · kind A · utility
11Cited by
5References
15Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Nov 22, 1991 |
| Grant date | Mar 15, 1994 |
| Priority date | — |
| Expiry date | Nov 22, 2011 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/256
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A functionally gradient circuit board is constituted by a mixture of a metal and an insulating ceramic composition, the abundance ratio of the metal component to the component of the insulating ceramic composition being changed in the direction of thickness of the board.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.