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. 01, 1992
Filed:
May. 28, 1991
Applicant:
Inventors:
Hideaki Katoh, Saitama, JP;
Nobuhisa Noguchi, Saitama, JP;
Yutaka Kikuchi, Saitama, JP;
Isamu Kaneko, Saitama, JP;
Toshiaki Sugimoto, Tokyo, JP;
Seiki Kitahara, Tokyo, JP;
Teruo Hoshi, Chiba, JP;
Minoru Suzuki, Saitama, JP;
Shuichi Satoh, Tokyo, JP;
Assignee:
Dai-Ichi Seiko Co., Ltd., Kawaguchi, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
F21M / ;
U.S. Cl.
CPC ...
362256 ; 362223 ; 362343 ; 362344 ;
Abstract
An illumination device having a reflecting plate, at least one linear light source arranged on a first side of the reflecting plate, a diffusing plate arranged on a second side of the reflecting plate, and a light quantity adjusting member formed integrally with the reflecting plate.