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.

Date of Patent:
Feb. 17, 2004

Filed:

Feb. 28, 2002
Applicant:
Inventors:

Tomomasa Osumi, Yokohama, JP;

Hiroyuki Hirano, Yokohama, JP;

Yasuyuki Watanabe, Tokyo, JP;

Assignee:
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C09K 5/04 ; C10M / ;
U.S. Cl.
CPC ...
C09K 5/04 ; C10M / ;
Abstract

Refrigerating machine oils comprising an ester oil for use with a refrigerant containing carbon dioxide are described. The refrigerating machine oils have excellent lubricity, miscibility with a refrigerant, stability and electric insulation.


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