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. 24, 2001
Filed:
Sep. 29, 1995
Applicant:
Inventors:
Nicholas E. Schnur, Cincinnati, OH (US);
Eugene R. Zehler, West Chester, OH (US);
Assignee:
Henkel Corporation, Gulph Mills, PA (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C09K 5/04 ;
U.S. Cl.
CPC ...
C09K 5/04 ;
Abstract
A high quality lubricant for hermetically sealed domestic air conditioner and refrigerator compressors, especially those using chlorine free hydrofluorocarbon refrigerant working fluids, is provided by mixed esters of hindered polyols, most desirably pentaerythritol, with a mixture of carboxylic acids including at least some isopentanoic acid along with either or both of iso-nonanoic acid and dibasic acids such as adipic.