ALEXANDRIA, Va., Aug. 18 -- United States Patent no. 12,712,139, issued on Aug. 18, was assigned to Lenovo (Singapore) Pte. Ltd. (Singapore).
"Keyboard device and electronic apparatus" was invented by Riku Mitsui (Kanagawa, Japan).
According to the abstract* released by the U.S. Patent & Trademark Office: "A keyboard device includes a light source and a plurality of keycaps that is capable of emitting light with light emitted from the light source. The keyboard device includes a base plate configured to support the keycaps on a top surface side and a membrane sheet that has a top contact sheet, a bottom contact sheet, and a spacer sheet interposed between the top contact sheet and the bottom contact sheet, and that is laminated on a top s...