US Patent Issued to Hitachi Global Life Solutions on Aug. 12 for "Refrigerant quantity diagnosis device, refrigerant system, and refrigerant quantity diagnosis method" (Japanese Inventors)

ALEXANDRIA, Va., Aug. 12 -- United States Patent no. 12,385,679, issued on Aug. 12, was assigned to Hitachi Global Life Solutions Inc. (Tokyo).

"Refrigerant quantity diagnosis device, refrigerant system, and refrigerant quantity diagnosis method" was invented by Yoko Kokugan (Tokyo), Hiroshi Kusumoto (Tokyo), Keiko Oka (Tokyo), Hisae Shibuya (Tokyo), Noriyuki Tokura (Tokyo), Norikazu Sasaki (Tokyo), Kazuhiro Tsuchihashi (Tokyo) and Eiji Ogata (Tokyo).

According to the abstract* released by the U.S. Patent & Trademark Office: "A refrigerant quantity diagnosis device includes: an evaluation value calculation part that calculates a refrigerant quantity index evaluation value including a ratio of a measured refrigerant quantity index value to...