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:
Aug. 30, 2011
Filed:
Jan. 19, 2005
Applicants:
Christian Panz, Wesseling, DE;
Rene Allerdisse, Cologne, DE;
Helga Obladen, Bruehl, DE;
Mario Loebbus, Aschaffenburg, DE;
Anja Lukas, Hanau, DE;
Roland Bergmann, Grosskrotzenburg, DE;
Karl Meier, Alfter, DE;
Inventors:
Christian Panz, Wesseling, DE;
Rene Allerdisse, Cologne, DE;
Helga Obladen, Bruehl, DE;
Mario Loebbus, Aschaffenburg, DE;
Anja Lukas, Hanau, DE;
Roland Bergmann, Grosskrotzenburg, DE;
Karl Meier, Alfter, DE;
Assignee:
Evonik Degussa GmbH, Essen, DE;
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
C01B 33/12 (2006.01);
U.S. Cl.
CPC ...
Abstract
Precipitated silicas with a high pH and their use in applications as defoamers having optimum silanol group density and a process for preparing precipitated silicas and to their use, particularly in defoamer formulations.