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:
Apr. 05, 1994
Filed:
Jun. 30, 1992
Applicant:
Inventors:
Hiroki Sawada, Wakayama, JP;
Toshiya Hagihara, Izumisano, JP;
Yuichiro Kobayashi, Wakayama, JP;
Akimitsu Sakai, Wakayama, JP;
Hideo Suzuki, Wakayama, JP;
Toshihiro Tanaka, Wakayama, JP;
Hiroshi Nagumo, Wakayama, JP;
Yukinaga Yokota, Hannan, JP;
Assignee:
Kao Corporation, Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C09K / ; C10M / ;
U.S. Cl.
CPC ...
252 68 ; 252 / ; 252 / ; 252 67 ;
Abstract
A working fluid composition for use in a refrigeration system which comprises a refrigerating oil comprising a compound having one or more ketone groups in the molecular structure as a base oil and a hydrofluorocarbon.