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:
Jan. 31, 2006
Filed:
Jun. 06, 2002
Applicants:
Walter Mahler, Wilmington, DE (US);
Leo Ernest Manzer, Wilmington, DE (US);
Inventors:
Walter Mahler, Wilmington, DE (US);
Leo Ernest Manzer, Wilmington, DE (US);
Assignee:
E. I. du Pont de Nemours and Company, Wilmington, DE (US);
Attorneys:
Primary Examiner:
Int. Cl.
CPC ...
C09K 5/04 (2006.01);
U.S. Cl.
CPC ...
Abstract
The present invention provides compositions that are useful for compatibilizing a conventional, non-polar, compression refrigeration lubricant and a hydrofluorocarbon and/or hydrochlorofluorocarbon refrigerant in a compression refrigeration apparatus. Additionally, these compositions promote efficient return of lubricant from the non-compressor zones to the compressor zones of the aforesaid refrigeration apparatus.