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:
Sep. 14, 2021
Filed:
Oct. 03, 2016
Hitachi Chemical Company, Ltd., Tokyo, JP;
Kazuyuki Kamo, Tsukuba, JP;
Hirotaka Sakuma, Hitachinaka, JP;
Kenichi Ishitsuka, Nagareyama, JP;
Tomotsugu Sugioka, Moriya, JP;
Yuki Yoshinari, Tsukuba, JP;
Ryo Honna, Hitachi, JP;
Daisuke Ryuzaki, Tsuchiura, JP;
Showa Denko Materials Co., Ltd., Tokyo, JP;
Abstract
Embodiments of the present invention relate to a composition containing a polymer or oligomer (A) and an initiator (B), wherein the polymer or oligomer (A) contains no alkyl groups of 5 or more carbon atoms, contains at least one type of structural unit selected from the group consisting of a structural unit containing an aromatic amine structure and a structural unit containing a carbazole structure, and contains, at one or more terminals, a structural unit containing a thienyl group which may have a substituent, and a degree of solubility of the composition is capable of being changed by applying heat, light, or both heat and light.