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:
Sep. 22, 1998
Filed:
Apr. 25, 1996
Applicant:
Inventors:
Assignee:
Copal Company Limited, Tokyo, JP;
Primary Examiner:
Int. Cl.
CPC ...
G09F / ;
U.S. Cl.
CPC ...
40452 ; 40541 ;
Abstract
A plurality of sign display units are arranged adjacent to each other along at least one surface in order to form a convex or concave arc curved surface curved with a predetermined radius. In each sign display unit, light-emitting elements are arranged in a dot matrix so as to be able to display a kanji character, a high-quality alpha-numeric character close to a printing type, or an image, thus displaying desired sign information. The sign display unit provides good readability while its visual field angle is increased without degrading the display quality.