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. 30, 2020
Filed:
Jan. 31, 2018
Fujifilm Wako Pure Chemical Corporation, Osaka-shi, Osaka, JP;
Nihon University, Tokyo, JP;
Ryuzi Katoh, Tokyo, JP;
Masami Enoki, Tokyo, JP;
Kazuki Nemoto, Tokyo, JP;
Katsufumi Suzuki, Saitama, JP;
Tetsuji Murase, Saitama, JP;
Shigeaki Imazeki, Saitama, JP;
FUJIFILM Wako Pure Chemical Corporation, Tokyo, JP;
NIHON UNIVERSITY, Tokyo, JP;
Abstract
A reverse photochromic compound of the related art has difficulty in sensing light with a wavelength of 600 nm or greater in a visible light region which has been used for medical applications. Therefore, an object of the present invention is to provide a reverse photochromic compound and a polymer which have a high sensitivity to light having a wavelength of 600 nm or greater. The present invention relates to a compound and the like represented by the following general formula (1). In the formula, Rand Reach independently represent a hydrogen atom or the like, R, R, and Reach independently represent an alkyl group or the like, Rrepresents a group having a polymerizable unsaturated group, a carboxy group, or an alkoxycarbonyl group, Rand Reach independently represent an alkoxy group or the like, Rand Reach independently represent a hydrogen atom or the like, Yrepresents an oxygen atom or a sulfur atom, Anrepresents an anion, nto nrepresent a specific integer, and Rand R, Rand R, and/or Rand Rmay form an alkylene group.