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:
Oct. 06, 2009
Filed:
Sep. 21, 2005
Applicants:
Gunther Windecker, Ludwigshafen, DE;
Alexander Weck, Freinsheim, DE;
Markus Roesch, Dienheim, DE;
Michael Steiniger, Neustadt, DE;
Rolf Pinkos, Bad Duerkheim, DE;
Dany Vanden Hautte, Bernissart, BE;
Inventors:
Gunther Windecker, Ludwigshafen, DE;
Alexander Weck, Freinsheim, DE;
Markus Roesch, Dienheim, DE;
Michael Steiniger, Neustadt, DE;
Rolf Pinkos, Bad Duerkheim, DE;
Dany Vanden Hautte, Bernissart, BE;
Assignee:
BASF Aktiengesellschaft, Ludwigshafen, DE;
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
C07D 307/02 (2006.01); B01D 3/34 (2006.01); B01D 3/00 (2006.01);
U.S. Cl.
CPC ...
Abstract
The present invention provides a process for distillatively purifying tetrahydrofuran in the presence of a polar solvent.