ALEXANDRIA, Va., Oct. 6 -- United States Patent no. 12,753,634, issued on Oct. 6, was assigned to LIXIL Corp. (Tokyo).
"Cylinder lock and door" was invented by Fuminori Akiyama (Tokyo) and Takashi Mitsuhashi (Tokyo).
According to the abstract* released by the U.S. Patent & Trademark Office: "Provided is a cylinder lock which allows for a reduction in the diameter of an outer cylinder, and has good assembly workability. A cylinder lock comprising an outer cylinder, an inner cylinder that is rotatably fit with the outer cylinder, and a lid member that covers the outer cylinder, wherein the outer cylinder and the inner cylinder have a pin hole communicating with a keyhole and through which a driver pin and a tumbler pin can be inserted, and ...