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. 01, 1980
Filed:
Jun. 27, 1978
Applicant:
Inventor:
Masachika Yaguchi, Yokohama, JP;
Assignee:
Dai Nippon Toryo Co., Ltd., Osaka, JP;
Attorneys:
Primary Examiner:
Int. Cl.
CPC ...
G02F / ; G09F / ;
U.S. Cl.
CPC ...
350357 ; 252408 ;
Abstract
An electrochromic composition is composed of a solvent, an electrochromic compound having a high solubility to the solvent, and a compound selected from a group of ammonia, organic amine and alkali. The solubility of the electrochromic compound to the solvent is not less than 10.sup.-2 mol/100 g-solvent in a reduced state and not less than 10.sup.-1 mol/100 g-solvent in an oxidized state. A masking agent may be added to the EC compound. The EC composition is sealed in an EC display cell.
Yaguchi, Masachika. (1980). Electrochromic composition and electrochromic display device using same (U.S. Patent No. 4210390). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/4210390
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile