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:
Feb. 03, 1981
Filed:
Nov. 06, 1978
Applicant:
Inventor:
Freddy Huguenin, Lausanne, CH;
Assignee:
Ebauches S.A., Neuchatel, CH;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G02F / ;
U.S. Cl.
CPC ...
350357 ; 40450 ;
Abstract
Display elements of an electrochromic display device are formed of two lines of electrochromic material separated by a zone devoid of such material. The areas of the lines of every element are equal to produce equal contrast effects in response to equal activation charges applied thereto.
Huguenin, Freddy. (1981). Electrochromic display device (U.S. Patent No. 4248503). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/4248503
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile