ALEXANDRIA, Va., March 31 -- United States Patent no. 12,590,943, issued on March 31, was assigned to DAIKIN INDUSTRIES LTD. (Osaka, Japan).
"Liquid sensor and hydraulic unit" was invented by Hikaru Seike (Osaka, Japan), Hirokazu Nakamura (Osaka, Japan), Mineo Inoue (Osaka, Japan) and Kenji Ayado (Osaka, Japan).
According to the abstract* released by the U.S. Patent & Trademark Office: "A liquid sensor includes a light receiver configured to receive light. The light receiver is attachable to an outside of an accommodation unit into which a liquid is introduced and which has translucency. The light receiver receives light that has passed through the liquid in the accommodation unit or light reflected by the liquid, and outputs a signal rel...