ALEXANDRIA, Va., Aug. 20 -- United States Patent no. 12,393,283, issued on Aug. 19, was assigned to CHANCE LINE INDUSTRIAL Co. LTD. (Siansi Township, Taiwan).
"Keyboard membrane and keyboard" was invented by Ming-Hsien Yao (Siansi Township, Taiwan).
According to the abstract* released by the U.S. Patent & Trademark Office: "A keyboard membrane, which is a thin sheet molded object thermoformed by a thermoplastic wear-resistant molding membrane, comprising a plurality of concave-convex parts, the concave-convex part comprises a plurality of upwardly protruding pressing parts, each of the pressing parts has a top wall and a peripheral wall extending downward from a periphery of the top wall; the keyboard membrane is disposed on a key module ...