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:
Oct. 14, 1997
Filed:
Apr. 24, 1995
Applicant:
Inventors:
Hiroshi Haji, Chikushino, JP;
Isamu Morisako, Fukuoka, JP;
Assignee:
Matsushita Electric Industrial Co., Ltd., Osaka, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B23K / ;
U.S. Cl.
CPC ...
219 5621 ; 219 5622 ;
Abstract
A voltage is applied between a first cleaning electrode that in contact with an electrode on a workpiece such as a printed circuit board or a chip, and a second cleaning electrode located in the vicinity of the electrode on the workpiece, from a voltage application circuit so as to produce an electric discharge on the electrode on the workpiece, whereby contamination sticking to the electrode on the workpiece is locally removed by heat generated from the electric discharge.