Anodized aluminum electronic package components
US5403975A · kind A · utility
4Cited by
29References
6Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Aug 31, 1993 |
| Grant date | Apr 4, 1995 |
| Priority date | — |
| Expiry date | Aug 31, 2013 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH05K3/44
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A process for producing electronic package components from an aluminum alloy is disclosed. The components have a black color through integral color anodization. The desired color, thickness and surface finish are achieved by regulation of amperage during anodization. The amperage is rapidly raised to in excess of 80 amps per square foot and then allowed to gradually decrease as a function of oxide growth.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.