The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
May. 05, 1992
Filed:
Jul. 25, 1990
Applicant:
Inventors:
Kinya Horibe, Shizuoka, JP;
Tomio Hirano, Shizuoka, JP;
Minoru Ikeda, Shizuoka, JP;
Hideaki Murata, Shizuoka, JP;
Assignee:
Yazaki Corporation, , JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B23K / ;
U.S. Cl.
CPC ...
21912185 ; 2191216 ; 21912166 ;
Abstract
To remove pores and lattice defects in gold film plated on a substrate, the gold plating film is irradiated with a first laser beam to bring at least the surface of the film into almost melted condition, and then cooled in air. Further, it is preferable to anneal the melted gold surface by a second laser beam weaker than the first laser beam before air cooling, thus reducing the thickness of the gold film and therefore the material cost of electric contacts, for instance.