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:
Jan. 05, 2010
Filed:
Oct. 04, 2004
Applicants:
Motoshige Sumino, Kawagoe, JP;
Kazuhito Fukasawa, Kawagoe, JP;
Shigeaki Imazeki, Kawagoe, JP;
Tetsuya Watanabe, Kawagoe, JP;
Inventors:
Motoshige Sumino, Kawagoe, JP;
Kazuhito Fukasawa, Kawagoe, JP;
Shigeaki Imazeki, Kawagoe, JP;
Tetsuya Watanabe, Kawagoe, JP;
Assignee:
Wako Pure Chemical Industries, Ltd., Osaka, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
C07F 255/00 (2006.01);
U.S. Cl.
CPC ...
Abstract
A method for producing a triarylsulfonium salt having a structure that only one of the three arobatic rings of the three aromatic rings on the cationic portion is different from the other two aromatic groups, and which is useful, for example, as an acid-generating agent for a resist or a photo cationic polymerization initiator,