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:
Oct. 25, 1983
Filed:
Feb. 11, 1981
Applicant:
Inventors:
Kazusuke Yamanaka, Shiroyama, JP;
Shouji Mochizuki, Hachioji, JP;
Assignee:
Hitachi, Ltd., Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G02F / ;
U.S. Cl.
CPC ...
350357 ;
Abstract
Disclosed is an electrochromic display element having a counter electrode comprised of a sintered material prepared by sintering an atomized material comprising as main components a powder of Sn[Fe(CN).sub.6 ], MnK[Fe(CN).sub.6 ], NiK[Fe(CN).sub.6 ], amorphous Fe.sub.2 (WO.sub.4).sub.3, amorphous FeWO.sub.4, amorphous Mn.sub.2 (WO.sub.4).sub.3 or amorphous MnWO.sub.4 and a powder of carbon. This electrochromic display element is characterized in that no substantial non-uniform brightness is observed among colored segments.