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:
Dec. 11, 2018
Filed:
Mar. 30, 2016
Canon Kabushiki Kaisha, Tokyo, JP;
Jun Yamamoto, Tokyo, JP;
Shinjiro Okada, Kamakura, JP;
Kenji Yamada, Yokohama, JP;
Wataru Kubo, Inagi, JP;
CANON KABUSHIKI KAISHA, Tokyo, JP;
Abstract
An electrochromic element, includes: a pair of electrodes (); and an electrochromic layer () disposed between the pair of electrodes (), the electrochromic element being controlled in transmittance by pulse width modulation, in which: the electrochromic layer () contains at least one of two or more kinds of anode electrochromic materials, or two or more kinds of cathode electrochromic materials; and all of one of the anode electrochromic materials and the cathode electrochromic materials have an equal molecular length, or have a molecular length ratio of (large molecular length)/(small molecular length) of 1.4 or less, the electrochromic element being such that even when a driving environment temperature changes, its gradation can be controlled under a state in which its absorption spectrum is retained.