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:
May. 29, 2012
Filed:
Jul. 11, 2007
Applicants:
Thomas J. Leck, Hockessin, DE (US);
Thomas Frank Saturno, New Castle, DE (US);
Gregory A. Bell, New Castle, DE (US);
Inventors:
Thomas J. Leck, Hockessin, DE (US);
Thomas Frank Saturno, New Castle, DE (US);
Gregory A. Bell, New Castle, DE (US);
Assignee:
E.I. du Pont de Nemours and Company, Wilmington, DE (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C07C 19/08 (2006.01);
U.S. Cl.
CPC ...
Abstract
The present invention relates to compositions and processes of using perfluoropolyether to maintain or improve the oil return, lubrication, cooling capacity or energy efficiency of the refrigeration, air conditioning and heat transfer system.