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. 22, 2010
Filed:
Dec. 02, 2005
Hiroyuki Ohnishi, Kanagawa-ken, JP;
Yasuaki Sugimoto, Kawasaki, JP;
Hiroyuki Ohnishi, Kanagawa-ken, JP;
Yasuaki Sugimoto, Kawasaki, JP;
Tokyo Ohka Kogyo Co., Ltd., Kawasaki-shi, JP;
Abstract
A positive photosensitive resin composition exhibiting excellent heat resistance is provided, which comprises an alkali-soluble resin component (A) and a photosensitizer (B), the component (A) including a resin component (A1) having a structural unit (a1) represented by general formula (a1) shown below: wherein Rrepresents a hydrogen atom or a methyl group; Rrepresents a single bond or an alkylene group of 1 to 5 carbon atoms; Rrepresents an alkyl group of 1 to 5 carbon atoms; and a represents an integer of 1 to 5, and b represents 0 or an integer of 1 to 4, with the proviso that the sum of a and b is 5 or less, and when two or more Rare present, Rmay be the same or different.