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:
Jan. 12, 2016
Filed:
Jan. 15, 2009
Applicants:
Oliver Thum, Ratingen, DE;
Lutz Hilterhaus, Hamburg, DE;
Andreas Liese, Hamburg, DE;
Inventors:
Assignee:
Evonik DeGussa GmbH, Essen, DE;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
C12P 7/62 (2006.01); C12M 1/40 (2006.01); C12M 1/12 (2006.01);
U.S. Cl.
CPC ...
C12P 7/62 (2013.01); C12M 21/18 (2013.01); C12M 25/16 (2013.01);
Abstract
Process for heterogeneously catalyzed preparation of carboxylic acid derivatives using a reactor system comprising at least one reservoir vessel V, feed lines, at least one pump and a reaction vessel R, characterized in that a permanent gas flow through the reaction vessel R is applied through a gas feed line, and in which a reaction chamber in which the heterogeneous catalyst is not introduced in tightly packed form is delimited by at least two filters such that both the mass flow and the gas flow are passed through the reaction chamber.