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:
Jun. 13, 2006
Filed:
Feb. 14, 2002
Applicants:
Stephan M. Brandstater, Indianapolis, IN (US);
Mitchel Cohn, West Lafayette, IN (US);
Victoria E. Hedrick, Brookston, IN (US);
Yuichi Iikubo, West Lafayette, IN (US);
Inventors:
Stephan M. Brandstater, Indianapolis, IN (US);
Mitchel Cohn, West Lafayette, IN (US);
Victoria E. Hedrick, Brookston, IN (US);
Yuichi Iikubo, West Lafayette, IN (US);
Assignee:
PCBU Services, Inc., Wilmington, DE (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B01D 3/36 (2006.01); B01D 3/40 (2006.01); C07C 17/386 (2006.01);
U.S. Cl.
CPC ...
Abstract
The present invention involves processes that utilize an olefinic compound, in particular, hexafluoropropene (HFP) or chlorotrifluoroethene (CFC-1113) as extracting agents in the purification of pentafluoroethane (HFC-125). These processes can utilize recovered HFP as a precursor for the production of heptafluoropropane (HFC-227) or other derivatives.