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:
Jul. 17, 2001
Filed:
Feb. 04, 1997
Applicant:
Inventors:
Tatsuya Egawa, Sodegaura, JP;
Hirotaka Yamasaki, Sodegaura, JP;
Kenji Mogami, Sodegaura, JP;
Satoshi Nagao, Sodegaura, JP;
Toyokazu Handa, Sodegaura, JP;
Masato Kaneko, Ichihara, JP;
Assignee:
Idemitsu Kosan Co., Ltd., Tokyo, JP;
Primary Examiner:
Int. Cl.
CPC ...
C09K 5/04 ;
U.S. Cl.
CPC ...
C09K 5/04 ;
Abstract
A lubricating oil for compression-type refrigerators using a refrigerant containing pentafluoroethane which lubricating oil comprises a polyvinyl ether compound having (a) a constituting unit represented by general formula (I):