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:
Feb. 04, 2003
Filed:
Nov. 08, 2000
Applicant:
Inventor:
Masanori Matsukawa, Aichi, JP;
Assignee:
Aisin Takaoka Co., Ltd., Toyota, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
B23H 1/100 ; C25F 3/00 ; H05K 3/07 ;
U.S. Cl.
CPC ...
B23H 1/100 ; C25F 3/00 ; H05K 3/07 ;
Abstract
A method for producing a separator in which a recessed gas path is formed. Depth fluctuations of the gas path can be reduced. The gas path having plural depths or gradation can be formed easily. An electrically conductive member , as a separator, and a processing electrode , having patterned electrode projections , are immersed in an electrolytic solution facing each other. Current is fed between member and electrode for electrolytic processing to dissolve the portion of the member facing projections , thus forming a gas path having a surface roughness Rz on this bottom surface not larger than &mgr;m.