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. 10, 2001
Filed:
Dec. 02, 1999
Tadashi Iizuka, Ashikaga, JP;
Reishi Naka, Tochigi-ken, JP;
Katsumi Fukuda, Tochigi-ken, JP;
Makoto Tanaka, Kanuma, JP;
Yoshiharu Homma, Hitachi, JP;
Hiroaki Hata, Tochigi-ken, JP;
Hirokatsu Kousokabe, Ibaraki-ken, JP;
Koji Nariyoshi, Tochigi-ken, JP;
Hiroshi Iwata, Odawara, JP;
Hitachi, Ltd., Tokyo, JP;
Abstract
A refrigerating apparatus comprising a refrigeration cycle comprising at least a compressor, a condenser, a dryer, an expansion mechanism and an evaporator, a refrigerant composed mainly of a fluorocarbon type refrigerant containing no chlorine and having a critical temperature of 40° C. or higher, and a refrigerating machine oil comprising as base oil an ester oil of one or more fatty acids which contains at least two ester linkages