US Patent Issued to KOKUYO on March 11 for "Chair having a movable seat" (Japanese Inventor)

ALEXANDRIA, Va., March 12 -- United States Patent no. 12,245,702, issued on March 11, was assigned to KOKUYO Co. LTD. (Osaka, Japan).

"Chair having a movable seat" was invented by Katsuaki Hayashi (Osaka, Japan).

According to the abstract* released by the U.S. Patent & Trademark Office: "The chair can attain smooth movement of a seat by using a rolling surface. The chair includes an upper base unit (31) and a lower base unit (32) facing each other, and a seat (1) that is provided in the upper base unit (31) and swings when the upper base unit (31) rolls with respect to the lower base unit (32), and the upper base unit (31), which is at least one of the upper base unit (31) and the lower base unit (32), includes a rolling surface (312a) be...