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. 14, 1984
Filed:
Nov. 30, 1982
Shigenori Yamaoka, Yokohama, JP;
Kenmatsu Isozaki, Toride, JP;
Kyotaro Nishi, Tokyo, JP;
Yukihiro Okabe, Yokohama, JP;
Mitsutaka Waki, Yokohama, JP;
Masuo Mizuno, Yokohama, JP;
Sumitomo Bakelite Co. Ltd., , JP;
Abstract
Polyimide-type-resin-etching rate can remarkably be enhanced by combining tetramethylammonium hydroxide or an aqueous solution of tetramethylammonium hydroxide with at least one member selected from the group consisting of amide compounds represented by the following formula: ##STR1## and amide compounds represented by the following formula: ##STR2## and amine compounds represented by the following formula:
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile