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:
Mar. 27, 2012
Filed:
Nov. 08, 2007
Applicants:
Herbert Barthel, Mehring, DE;
Helmut Maginot, Burgkirchen, DE;
Inventors:
Herbert Barthel, Mehring, DE;
Helmut Maginot, Burgkirchen, DE;
Assignee:
Wacker Chemie AG, Munich, DE;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
C01B 33/18 (2006.01); G03G 9/087 (2006.01);
U.S. Cl.
CPC ...
Abstract
A large scale process for preparing fumed silica with consistent product parameters wherein a silica precursor compound is fed to a burner at ≧100 Kg/h along with a combusting gas at ≧300 m/h and a combustible gas at ≧100 m/h, with a nozzle gas velocity between 10 and 200 m/s, and a radially symmetrical, homogenous gas velocity and gas temperature.