ALEXANDRIA, Va., July 30 -- United States Patent no. 12,374,511, issued on July 29, was assigned to Primax Electronics Ltd. (Taipei, Taiwan).
"Keycap" was invented by Lei-Lung Tsai (Taipei, Taiwan), Sheng-Fan Chang (Taipei, Taiwan) and Chang-Huan Shen (Taipei, Taiwan).
According to the abstract* released by the U.S. Patent & Trademark Office: "A keycap includes a lower plate, a first magnetic element, an upper cover and a second magnetic element. The lower plate has two first engaging portions, which are respectively disposed on two opposite sides of an upper surface of the lower plate. The first magnetic element is fixed on the lower plate. The upper cover is configured to be detachably assembled on the lower plate, in which the upper co...