US Patent Issued to IDEMITSU KOSAN on Jan. 27 for "Refrigerator oil composition and mixed composition for refrigerator" (Japanese Inventors)

ALEXANDRIA, Va., Jan. 28 -- United States Patent no. 12,534,656, issued on Jan. 27, was assigned to IDEMITSU KOSAN Co. LTD. (Chiyoda-ku, Japan).

"Refrigerator oil composition and mixed composition for refrigerator" was invented by So Nakajima (Edogawa-ku, Japan) and Masaya Kubota (Chiba, Japan).

According to the abstract* released by the U.S. Patent & Trademark Office: "A mixed composition including a refrigerant including at least one unsaturated fluorinated hydrocarbon compound selected from the compound having a formula CxFyHz, x is an integer of 2 to 6, y is an integer of 1 to 11, z is an integer of 1 to 11, and the compound has at least one unsaturated carbon-carbon bond, and a refrigerator oil including a base oil (A); a phosphorus-...