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:
Feb. 10, 2009
Filed:
Nov. 06, 2007
Applicants:
Knut Sommer, Krefeld, DE;
Markus Dugal, Kempen, DE;
Ido Schwarz, Düsseldorf, DE;
Stefan Wershofen, Mönchengladbach, DE;
Peter Lehner, Ratingen, DE;
Stephan Schubert, Leverkusen, DE;
Alexandra Groβe Böwing, Köln, DE;
Inventors:
Knut Sommer, Krefeld, DE;
Markus Dugal, Kempen, DE;
Ido Schwarz, Düsseldorf, DE;
Stefan Wershofen, Mönchengladbach, DE;
Peter Lehner, Ratingen, DE;
Stephan Schubert, Leverkusen, DE;
Alexandra Groβe Böwing, Köln, DE;
Assignee:
Bayer MaterialScience LLC, Leverkusen, DE;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C07C 209/84 (2006.01);
U.S. Cl.
CPC ...
Abstract
Compounds containing phenolic hydroxy groups are removed from a gas stream which contains at least one aromatic amine generated during the gas-phase hydrogenation reaction of the corresponding nitroaromatic compounds with hydrogen, by adsorption on a basic solid.