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:
Nov. 17, 2009
Filed:
Apr. 11, 2006
Applicants:
Noriyuki Kokeguchi, Kokubunji, JP;
Osamu Ishige, Kawasaki, JP;
Rie Sakuragi, Ebina, JP;
Inventors:
Assignee:
Konica Minolta Holdings, Inc., Tokyo, JP;
Primary Examiner:
Int. Cl.
CPC ...
G02F 1/15 (2006.01); G02B 5/23 (2006.01);
U.S. Cl.
CPC ...
Abstract
An electrochromic display element includes a pair of counter electrodes having therebetween an electrochromic compound represented by Formula (1), wherein the electrochromic compound becomes colored when being oxidized and becomes colorless when being reduced by a driving operation of the electrodes: wherein Rrepresents a substituted or unsubstituted aryl group; and Rand Reach represent a hydrogen atom or a substituent; X represents >N—R, an oxygen atom or a sulfur atom; and Rrepresents a hydrogen atom or a substituent.