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:
Jul. 13, 2004
Filed:
Nov. 15, 2002
Applicant:
Inventors:
Akira Katano, Kanagawa, JP;
Yusuke Nakagawa, Kanagawa, JP;
Shinichi Kono, Kanagawa, JP;
Kousuke Doi, Kanagawa, JP;
Assignee:
Tokyo Ohka Kogyo Co., Ltd., Kanagawa, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G03F 7/023 ; G03F 7/30 ;
U.S. Cl.
CPC ...
G03F 7/023 ; G03F 7/30 ;
Abstract
A composition includes (A) an alkali-soluble resin having Mw of 1500 to 10000, (B) a quinonediazide ester of, for example, the following formula, and (C) a phenolic compound containing an acid-decomposable group. When a resin film 1 &mgr;m thick is prepared from the alkali-soluble resin (A), the resin film is completely dissolved in 2.38% by weight tetramethylammonium hydroxide aqueous solution at 23° C. within ten seconds.