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:
Mar. 25, 1980
Filed:
Jul. 02, 1976
Applicant:
Inventors:
Toshitami Hara, Tokyo, JP;
Yoshioki Hajimoto, Chofu, JP;
Yoshiaki Shirato, Yokohama, JP;
Massaki Matsushima, Yokohama, JP;
Assignee:
Canon Kabushiki Kaisha Toshitama Hara, Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G02F / ;
U.S. Cl.
CPC ...
350357 ;
Abstract
An electrochromic device comprises an electrochromic layer comprising a transition metal compound sandwiched in between a first auxiliary electrochromic layer and a second auxiliary electrochromic layer, each of the auxiliary electrochromic layers comprising at least one metal compound containing at least one metal different from the metal in the transition metal compound in the electrochromic layer, and the difference in electro-negativity between both metals being not more than 0.4.