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. 04, 1990
Filed:
Sep. 08, 1989
Applicant:
Inventors:
Yasuo Kobayashi, Tokyo, JP;
Naoki Hagiwara, Tokyo, JP;
Taisuke Hirota, Tokyo, JP;
Churyo Kodama, Tokyo, JP;
Yasuo Hirasawa, Tokyo, JP;
Katsumi Miyazaki, Tokyo, JP;
Fumio Kawamura, Tokyo, JP;
Takao Higashi, Tokyo, JP;
Masami Yanagisawa, Shizuoka, JP;
Akinori Sei, Shizuoka, JP;
Assignees:
Tomoegawa Paper Co., Ltd., Tokyo, JP;
Hitachi Ltd., Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
F21M / ;
U.S. Cl.
CPC ...
362255 ; 362260 ;
Abstract
A lighting lamp is disclosed, comprising a lamp having laminated on the surface of a bulb thereof a display sheet, said display sheet comprising a support having thereon an active layer containing a pigment which is faded by the action of an active light and an active light-adjusting layer.