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:
Aug. 10, 1976
Filed:
Mar. 12, 1975
Applicant:
Inventors:
Masateru Yoshida, Tanashi, JA;
Minoru Natori, Saitama, JA;
Assignee:
Citizen Watch Co., Ltd., Tokyo, JA;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G04B / ; C09K / ;
U.S. Cl.
CPC ...
58 5 / ; 240-643 ; 3501 / ; 428-1 ; 428215 ; 428337 ; 428913 ; 40 5 / ; 4013 / ;
Abstract
A liquid crystal, electrochromic or other electro-optical material is sandwiched between two glass substrates. An electric field is applied to the electro-optical material to display time and other information on a watch. The lower glass substrate is thinner than the upper substrate so as to create clear displays and to enable the manufacture of a thin watch which is also light weight and shock resistant.
Yoshida, Masateru. (1976). Liquid crystal display cell (U.S. Patent No. 3973388). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/3973388
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile