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:
May. 12, 2009
Filed:
Aug. 28, 2001
Yasuhiro Kawaguchi, Kimitsu-gun, JP;
Nobuaki Shimizu, Kimitsu-gun, JP;
Masato Kaneko, Ichihara, JP;
Hiroshi Nagakawa, Tokyo, JP;
Yasuhiro Kawaguchi, Kimitsu-gun, JP;
Nobuaki Shimizu, Kimitsu-gun, JP;
Masato Kaneko, Ichihara, JP;
Hiroshi Nagakawa, Tokyo, JP;
Idemitsu Kosan Co., Ltd., Tokyo, JP;
Abstract
Disclosed is a lubricating oil for compression-type refrigerator comprising, as a main component, a polyoxyalkyleneglycol derivative represented by the general formula:[()m]nwherein symbols are as defined in the specification. Said lubricating oil has a favorable compatibility with refrigerants and an excellent lubricating property, and is utilized as the lubricating oil for compression-type refrigerator employing hydrogen-containing fluorocarbon compound refrigerants including R-134a or fluorocarbon compound refrigerants without hydrogen.