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. 23, 2002
Filed:
Sep. 08, 2000
Applicant:
Inventors:
Helmut Mangold, Rodenbach, DE;
Rainer Golchert, Dieburg, DE;
Assignee:
Degussa-Huls AG, Frankfurt, DE;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
A01N 2/512 ; A01N 2/508 ; A01N 5/900 ; C01B 1/320 ; C01B 3/318 ;
U.S. Cl.
CPC ...
A01N 2/512 ; A01N 2/508 ; A01N 5/900 ; C01B 1/320 ; C01B 3/318 ;
Abstract
Pyrogenically prepared silica doped with silver or silver oxide is prepared by feeding an aerosol into a flame such as is used for the preparation of pyrogenic silica, mixing the aerosol homogeneously with gas mixture before the reaction, then allowing the aerosol/gas mixture to react in a flame. The resulting pyrogenic silicas doped with silver or silver oxide are separated from the gas stream. The pyrogenic silica doped with silver or silver oxide by means of an aerosol can be used as a bactericidal filler.