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:
Jun. 09, 1981
Filed:
Jan. 25, 1980
Applicant:
Inventors:
Yasutoyo Kotani, Osaka, JP;
Kazuo Sawada, Osaka, JP;
Shuzo Nagai, Osaka, JP;
Takao Ogino, Osaka, JP;
Seiji Watabe, Osaka, JP;
Assignee:
Sumitomo Electric Industries, Ltd., Osaka, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C25D / ; C25D / ; C25D / ;
U.S. Cl.
CPC ...
204202 ; 2042 / ; 204225 ; 2042 / ;
Abstract
A process and apparatus for electrolytic etching of aluminum or its alloy is disclosed wherein an electric current is passed between an anode and a cathode which are spaced opposed in an electrolytic bath with a workpiece removably supported on an insulating frame so that the side of the workpiece to be etched faces the cathode, the insulating frame being disposed between the anode and the cathode and having at least one opening formed therein.