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:
Apr. 22, 2014
Filed:
Oct. 20, 2010
Applicants:
Christian Schneider, Mannheim, DE;
Nikolaus Zafred, Ludwigshafen, DE;
Andreas Heussler, Hassloch, DE;
Leo Denissen, Brasschaat, BE;
Lucia Koenigsmann, Stuttgart, DE;
Inventors:
Christian Schneider, Mannheim, DE;
Nikolaus Zafred, Ludwigshafen, DE;
Andreas Heussler, Hassloch, DE;
Leo Denissen, Brasschaat, BE;
Lucia Koenigsmann, Stuttgart, DE;
Assignee:
BASF SE, Ludwigshafen, DE;
Primary Examiner:
Int. Cl.
CPC ...
C07C 263/00 (2006.01);
U.S. Cl.
CPC ...
Abstract
What is proposed is a process for preparation and distillative workup of diphenylmethane diisocyanate (MDI), proceeding from a benzene-comprising feedstream, in which, in