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:
Nov. 14, 2000
Filed:
Jul. 08, 1998
Applicant:
Inventors:
Assignee:
Mitsubishi Denki Kabushiki Kaisha, Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H04M / ;
U.S. Cl.
CPC ...
379368 ; 379433 ;
Abstract
An illuminated button including a key button and an electroluminescent light (EL) for illuminating the key button from its bottom. The key button is composed of a silicone rubber material mixed with white color particles which prevent, while the EL is inoperative, a pink light reflected from the EL from being projected to the outside through the key button. This makes possible to solve a problem of a conventional illuminated button, which includes a key button and a white light EL used as a backlight, in that the pink color of the EL is seen from the outside through the key button, and this spoils the beauty of the illuminated button.