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. 27, 2011
Filed:
Feb. 25, 2009
Naoki Tatehata, Kyoto, JP;
Yousuke Chikahisa, Hyogo, JP;
Tsutomu Aisaka, Osaka, JP;
Koji Tanabe, Osaka, JP;
Naoki Tatehata, Kyoto, JP;
Yousuke Chikahisa, Hyogo, JP;
Tsutomu Aisaka, Osaka, JP;
Koji Tanabe, Osaka, JP;
Panasonic Corporation, Osaka, JP;
Abstract
A light guide sheet and a movable contact element using the single sheet have a simple structure and can be variously illuminated. The light guide sheet includes irregular-shaped light extracting elements formed on a film-like base material; and light-transmissive, belt-shaped light guide parts each connecting a predetermined number of groups of the light extracting elements. In addition, dome-shaped movable contacts formed of a conductive sheet metal are arranged on the bottom surfaces of the light extracting elements.