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. 08, 2014
Filed:
May. 07, 2009
Toshihiko Nagamura, Fukuoka, JP;
Masaaki Ozawa, Funabashi, JP;
Akihiro Tanaka, Funabashi, JP;
Osamu Hirata, Funabashi, JP;
Keisuke Odoi, Chiyoda-ku, JP;
Takeshi Sakano, Fukuoka, JP;
Toshihiko Nagamura, Fukuoka, JP;
Masaaki Ozawa, Funabashi, JP;
Akihiro Tanaka, Funabashi, JP;
Osamu Hirata, Funabashi, JP;
Keisuke Odoi, Chiyoda-ku, JP;
Takeshi Sakano, Fukuoka, JP;
Kyushu University, Fukuoka, JP;
Nissan Chemical Industries, Ltd., Tokyo, JP;
Abstract
The present invention relates to an electrochromic polymer compound composed of a hyperbranched polymer having electrochromic characteristics derived from a quaternary pyridinium salt, a terephthalic acid diester or a biphenyl-4,4'-diester structure, and a varnish, a thin film structure and an electrochromic device that are obtained by the polymer compound. The electrochromic material has high response speed, high coloring efficiency, and excellent repetition stability and can be used for a long time, and has excellent solubility in various solvents.