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:
Apr. 24, 2001
Filed:
Jan. 20, 1999
Yasushi Akahori, Tokyo, JP;
Noboru Masuda, Tokyo, JP;
Takeshi Izawa, Tokyo, JP;
Masayoshi Muraki, Kanagawa, JP;
Kazuo Tagawa, Kanagawa, JP;
Tomohiro Magome, Kanagawa, JP;
Other;
Abstract
A lubricant composition for a refrigerating machine employing a HFC type refrigerant containing at least one selected from the group consisting of HFC-32, HFC-125 and HFC-134a, which comprises a base oil of an ester formed from a dihydric or higher polyol as an alcohol and a monobasic aliphatic acid, alone or as a mixture thereof; and additives of, based on the total amount, 1) not less than 0.01 vol % and less than 1.0 vol % of a phosphate, 2) from 0.01 to 1.0 vol % of at least one of an alkylphosphorothionate and an arylphosphorothionate and 3) from 0.01 to 1.0 vol % of an epoxy compound.