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. 15, 2014
Filed:
Mar. 08, 2011
Yoshirou Kondou, Tsukuba, JP;
Tomiaki Otake, Tsukuba, JP;
Yoshirou Kondou, Tsukuba, JP;
Tomiaki Otake, Tsukuba, JP;
Kuraray Co., Ltd., Okayama, JP;
Abstract
An electrochromic material containing a π-electron based conjugated polymer that changes from a desired color developed state to a decolored state, and a method for producing the electrochromic material, are provided. The electrochromic material contains aπ-electron based conjugated polymer as shown in chemical formula (1). In formula (1), each X is any one selected from —S—, —O—, —Se— and —Te—; each Y is any one selected from a hydrogen atom and an organic group having 1 to 20 carbon atoms; W is an arylene group or divalent heteroaromatic ring group; and n is a number of 2 to 1,000. Repetition of this structure forms a structure of random copolymers, graft copolymers, block copolymers and/or dendrimers.