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:
Aug. 17, 1993
Filed:
Jun. 13, 1991
Applicant:
Inventors:
Junichi Onodera, Samukawa, JP;
Shigeru Otawa, Yamato, JP;
Assignee:
Tokyo Ohka Kogyo Co., Ltd., , JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G03F / ; G03F / ; G03F / ; G03F / ;
U.S. Cl.
CPC ...
430283 ; 430281 ; 430285 ; 430288 ; 430906 ; 430910 ; 430954 ;
Abstract
The present invention relates to a photopolymerizable resin composition developable with an aqueous weak alkaine solution and suitable for a printed circuit board. The photopolymerizable resin composition of the present invention is mainly composed of: