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:
May. 31, 1977
Filed:
Feb. 13, 1976
Applicant:
Inventor:
Yoshio Yamazaki, Shimosuwa, JA;
Assignee:
Kabushiki Kaisha Suwa Seikosha, Tokyo, JA;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G02F / ;
U.S. Cl.
CPC ...
3501 / ; 350150 ;
Abstract
A timepiece display device utilizes liquid crystals of positive dielectric anisotropy in a transparent cell having transparent electrodes on the interior surfaces of the cell walls. The device includes a polarizing filter and an analyzing filter at opposite faces of the cell and a mirror for reflecting light back through the cell in an arrangement which increases the intensity and contrast of the display.
Quick Actions:
Yamazaki, Yoshio. (1977). Timepiece display device utilizing liquid crystals of positive (U.S. Patent No. 4026637). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/4026637
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile