ALEXANDRIA, Va., Aug. 26 -- United States Patent no. 12,397,307, issued on Aug. 26, was assigned to YOSHINO KOGYOSHO Co. LTD. (Tokyo).
"Trigger-type liquid sprayer" was invented by Kota Sakata (Tokyo) and Kotaro Fujiwara (Tokyo).
According to the abstract* released by the U.S. Patent & Trademark Office: "A trigger-type liquid sprayer includes a sprayer main body mounted on a container body, and a nozzle member having a spray hole, the sprayer main body includes a vertical supply tube, a trigger mechanism having a trigger portion, a reservoir cylinder into which a liquid that has passed through the inside of the vertical supply tube is supplied in response to rearward movement of the trigger portion, and a reservoir plunger movably dispose...