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:
Sep. 11, 2012
Filed:
Oct. 19, 2007
Applicants:
Robert Weiss, Kirchheim, DE;
Jens Becker, Eisenberg, DE;
Inventors:
Robert Weiss, Kirchheim, DE;
Jens Becker, Eisenberg, DE;
Assignee:
BASF SE, Ludwigshafen, DE;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C08G 69/02 (2006.01);
U.S. Cl.
CPC ...
Abstract
Helical tube evaporators are used to concentrate aqueous extract solutions from the extraction of polyamides based on polyamide 6. A process for preparing polyamides based on polyamide 6 comprises the stages of