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. 31, 2018
Filed:
Jan. 28, 2016
Shigeyuki Harada, Shizuoka, JP;
Yoshiki Yanagawa, Shizuoka, JP;
Keita Katoh, Kanagawa, JP;
Masayuki Fukuoka, Shizuoka, JP;
Kazukiyo Nagai, Shizuoka, JP;
Yuusuke Koizuka, Shizuoka, JP;
Tomoyuki Shimada, Shizuoka, JP;
Akiyoshi Sabu, Shizuoka, JP;
Shigeyuki Harada, Shizuoka, JP;
Yoshiki Yanagawa, Shizuoka, JP;
Keita Katoh, Kanagawa, JP;
Masayuki Fukuoka, Shizuoka, JP;
Kazukiyo Nagai, Shizuoka, JP;
Yuusuke Koizuka, Shizuoka, JP;
Tomoyuki Shimada, Shizuoka, JP;
Akiyoshi Sabu, Shizuoka, JP;
Ricoh Company, Ltd., Tokyo, JP;
Abstract
To provide a copolymer including: a structural unit represented by the following General Formula (1) where X represents a hydrogen atom or a cation; a structural unit expressed by the following Structural Formula (1); and a structural unit represented by the following General Formula (2) where R is a hydrogen atom or a methyl group, L is a single bond or —(CH)—O—CO— where n is an integer in a range of from 2 through 18, and a carbonyl carbon atom in the —(CH)—O—CO— is bound to naphthyl.