The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Mar. 10, 2026
Filed:
Apr. 24, 2023
Eneos Corporation, Tokyo, JP;
Yuya Mizutani, Tokyo, JP;
Yuma Seki, Tokyo, JP;
Motoya Okazaki, Tokyo, JP;
Hidetoshi Ogata, Tokyo, JP;
Masaki Kawaguchi, Tokyo, JP;
ENEOS CORPORATION, Tokyo, JP;
Abstract
A refrigerating machine oil that can ensure the residual amount of an anti-wear agent. The refrigerating machine oil comprises an ester of a polyhydric alcohol and a fatty acid having 14 to 20 carbon atoms as a base oil, and an anti-wear agent. The fatty acid having 14 to 20 carbon atoms comprises an unsaturated fatty acid, which includes an unsaturated fatty acid having one carbon-carbon unsaturated bond and an unsaturated fatty acid having two or more carbon-carbon unsaturated bonds. The proportion of the unsaturated fatty acid having two or more carbon-carbon unsaturated bonds is 20% by mole or less based on the total amount of the unsaturated fatty acid.