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. 02, 2015
Filed:
May. 29, 2014
San-apro Ltd., Kyoto-shi, Kyoto, JP;
Tokyo Ohka Kogyo Co., Ltd., Kawasaki-shi, Kanagawa-ken, JP;
Issei Suzuki, Kyoto, JP;
Takuya Ikeda, Kyoto, JP;
Yusaku Takashima, Kyoto, JP;
Takeshi Furuta, Kyoto, JP;
Yoshitaka Komuro, Kawasaki, JP;
Yoshiyuki Utsumi, Kawasaki, JP;
Takaaki Kaiho, Kawasaki, JP;
Toshiaki Hato, Kawasaki, JP;
SAN-APRO LIMITED, Kyoto-shi, JP;
TOKYO OHKA KOGYA CO. LTD., Kawasaki-shi, JP;
Abstract
Provided is a novel sulfonium salt that has high solubility in a solvent and has high light sensitivity to, especially, light having a wavelength not longer than deep-UV (254 nm) and a novel photo-acid generator comprising the sulfonium salt. The invention relates to a sulfonium salt represented by the following general formula (1) and a novel photo-acid generator comprising the sulfonium salt. wherein Rrepresents an electron withdrawing group; Rand Reach independently represent an alkyl group having 1 to 5 carbon atoms, an alkoxy group, an acyl group, a halogenated alkyl group, a halogen atom, a hydroxyl group, a cyano group, or a nitro group; p and q each independently represent an integer of 0 to 5; and Xrepresents a monovalent counter anion.