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:
Sep. 11, 1984
Filed:
May. 18, 1983
Applicant:
Inventors:
Michio Sudo, Kuki, JP;
Hitoshi Miura, Tatebayashi, JP;
Assignee:
Kangyo Denkikiki Kabushiki Kaisha, Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H01L / ;
U.S. Cl.
CPC ...
156630 ; 156633 ; 156651 ; 1566591 ; 156901 ; 156904 ; 430314 ; 430316 ;
Abstract
A metal member to be etched is subjected to chemical etching through a mask having a predetermined pattern whereafter that portion of the mask overhanging a side-etched portion resulting from the etching is bent down to be joined by an adhesive binder to the side wall of the side-etched portion to form an etching-resistant layer on the side wall. Then the metal member is subjected again to etching through the etching-resistant layer and the mask.