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:
Jul. 04, 2006
Filed:
Dec. 14, 2001
Applicants:
Gottlieb-georg Lindner, Wesseling, DE;
Astrid Mueller, Moembris, DE;
Inventors:
Gottlieb-Georg Lindner, Wesseling, DE;
Astrid Mueller, Moembris, DE;
Assignee:
Degussa AG, Duesseldorf, DE;
Primary Examiner:
Int. Cl.
CPC ...
C01B 33/193 (2006.01); D21H 19/40 (2006.01); B41M 5/00 (2006.01); D06P 1/673 (2006.01); D06M 11/79 (2006.01);
U.S. Cl.
CPC ...
Abstract
Foreign-atom-doped precipitated silicas having a BET surface area of more than 300 m/g and a maximum surface concentration of the foreign atoms of 0.05 mmol/m, to a process for preparing them and to the use of the resulting precipitated silicas in papermaking.