ALEXANDRIA, Va., Oct. 8 -- United States Patent no. 12,437,738, issued on Oct. 7, was assigned to CASIO COMPUTER Co. LTD. (Tokyo).
"Case and keyboard instrument" was invented by Hirokatsu Katoh (Kawasaki, Japan) and Takahiro Moriya (Kokubunji, Japan).
According to the abstract* released by the U.S. Patent & Trademark Office: "A case of a keyboard instrument includes a lower case formed from a resin material which is a first material and extended long in a left-right direction which is a first direction, plural reinforcement members (a first reinforcement member, a second reinforcement member) fixed to the lower case, made from a sheet of steel which is a second material whose linear expansion coefficient is smaller than a linear expansion...