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:
Dec. 12, 2007
Applicants:
Hagen Wilmer, Ludwigshafen, DE;
Jürgen Zühlke, Speyer, DE;
Thomas Lautensack, Birkenau, DE;
Hans-martin Allmann, Neunkirchen, DE;
Frank Rosowski, Mannheim, DE;
Cornelia Dobner, Ludwigshafen, DE;
Inventors:
Hagen Wilmer, Ludwigshafen, DE;
Jürgen Zühlke, Speyer, DE;
Thomas Lautensack, Birkenau, DE;
Hans-Martin Allmann, Neunkirchen, DE;
Frank Rosowski, Mannheim, DE;
Cornelia Dobner, Ludwigshafen, DE;
Assignee:
BASF SE, , DE;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C07D 307/89 (2006.01);
U.S. Cl.
CPC ...
Abstract
The present invention relates to a process for gas-phase oxidation, in which a gaseous stream comprising an aromatic hydrocarbon and molecular oxygen is passed through two or more catalyst zones. Furthermore, the present invention relates to a catalyst system for gas-phase reaction using a preliminary zone.