ALEXANDRIA, Va., July 9 -- United States Patent no. 12,352,997, issued on July 8, was assigned to OMRON Corp. (Kyoto, Japan).
"Light guide plate unit and gaming machine" was invented by Takahiro Ono (Kyoto, Japan), Junya Fujita (Kyoto, Japan) and Yoshinori Ito (Kyoto, Japan).
According to the abstract* released by the U.S. Patent & Trademark Office: "A light guide plate unit includes: a first light guide plate (11) that is a light guide plate having a glass layer, and has the glass layer on a light exit surface of a light guide plate body (D); a light source (14), located on a side surface of the first light guide plate (11) and supplying light into the light guide plate body (D); and a housing (30). The housing (30) has an opening (32a)....