Laser cleaning of metal stock
US4898650A · kind A · utility
33Cited by
10References
4Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | May 10, 1988 |
| Grant date | Feb 6, 1990 |
| Priority date | — |
| Expiry date | May 10, 2008 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH05K3/3489
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A method of cleaning a metal surface by means of a laser to improve the surface characteristics, prior to plating thereover with a noble metal, such as gold. More particularly, the method hereof includes the steps of illuminating the desired areas of said metal surface with a laser beam; provided, however, the laser power density is controlled to vaporize surface contaminants and embedded foreign materials, without significantly altering the properties of the metal, in preparation for plating said cleaned areas with said noble metal.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.