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:
Nov. 07, 2006
Filed:
Apr. 22, 2004
Applicants:
Ortmund Lang, Quirnbach, DE;
Bernd Rumpf, Hockenheim, DE;
Matthias Frauenkron, Freinsheim, DE;
Marco Bosch, Mannheim, NL;
Helmut Berrsche, Hassloch, DE;
Anton Meier, Birkenheide, DE;
Inventors:
Ortmund Lang, Quirnbach, DE;
Bernd Rumpf, Hockenheim, DE;
Matthias Frauenkron, Freinsheim, DE;
Marco Bosch, Mannheim, NL;
Helmut Berrsche, Hassloch, DE;
Anton Meier, Birkenheide, DE;
Assignee:
BASF Aktiengesellschaft, Ludwigshafen, DE;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C07D 487/00 (2006.01);
U.S. Cl.
CPC ...
Abstract
Process for purifying triethylenediamine (TEDA) by disillation, in which the fractionation is carried out in a dividing wall column.