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. 17, 2014
Filed:
Mar. 23, 2012
Applicants:
Koji Ichikawa, Osaka, JP;
Hiromu Sakamoto, Osaka, JP;
Yuichi Mukai, Osaka, JP;
Inventors:
Assignee:
Sumitomo Chemical Company, Limited, Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G03F 7/039 (2006.01); G03F 7/30 (2006.01);
U.S. Cl.
CPC ...
Abstract
The present invention provides a photoresist composition containing: a resin which contains a structural unit derived from a compound having an acid-labile group and which is insoluble or poorly soluble in an alkali aqueous solution but becomes soluble in an alkali aqueous solution by the action of an acid; an acid generator and a compound represented by the formula (I): wherein R, X, R, u1, s1, t1 are each defined in the specification, with the proviso that sum of s1 and t1 is 1 or 2.