ALEXANDRIA, Va., March 26 -- United States Patent no. 12,256,813, issued on March 25, was assigned to SONY GROUP Corp. (Tokyo).
"Band device, wristwatch, and end piece" was invented by Kentaro Matsunaga (Tokyo) and Tatsuhito Aono (Tokyo).
According to the abstract* released by the U.S. Patent & Trademark Office: "A band device according to an aspect of the present disclosure includes a sensor unit, and a band unit that is linked to the sensor unit and forms a hollow part together with the sensor unit. The band unit includes an end piece section to which a watch head section is attached, and an engaging section that makes detachable engagement in a state where the band unit is wrapped around a wrist."
The patent was filed on Jan. 15, 2021...