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:
Feb. 20, 2001
Filed:
Mar. 11, 1999
Applicant:
Inventors:
Keisaku Ishihara, Tokyo, JP;
Yoshinori Shirafuji, Tokyo, JP;
Shin Sekiya, Tokyo, JP;
Noboru Masuda, Tokyo, JP;
Takeshi Izawa, Tokyo, JP;
Hideto Nakao, Tokyo, JP;
Makoto Tsukiji, Tokyo, JP;
Shinsuke Miki, Tokyo, JP;
Assignee:
Mitsubishi Denki Kabushiki Kaisha, Tokyo, JP;
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
F25B 4/100 ;
U.S. Cl.
CPC ...
F25B 4/100 ;
Abstract
A refrigerant-circulating system which comprises a refrigeration cycle comprising a refrigerant compressor, a condenser, an expansion mechanism and an evaporator to form a refrigerant circuit and employing a refrigerant which contains no chlorine, wherein an aromatic polyether oil having as a base oil structure a benzene ring having an ether bond is employed as a refrigerator oil.