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:
Jun. 26, 2007
Filed:
Jul. 07, 2003
Stipan Katusic, Kelkheim, DE;
Guenther Michael, Karlstein, DE;
Peter Kress, Karlstein, DE;
Guido Zimmermann, Hanau, DE;
Andreas Gutsch, Ranstadt, DE;
Geoffrey J. Varga, Freigericht, DE;
Stipan Katusic, Kelkheim, DE;
Guenther Michael, Karlstein, DE;
Peter Kress, Karlstein, DE;
Guido Zimmermann, Hanau, DE;
Andreas Gutsch, Ranstadt, DE;
Geoffrey J. Varga, Freigericht, DE;
Degussa AG, Duesseldorf, DE;
Abstract
Pyrogenically prepared, doped zinc oxide powder, wherein the doping component comprises at least one oxide from the group aluminum, gallium, indium, germanium, tin and is present in the doped zinc oxide powder in an amount of from 0.005 to 15 wt. %, and wherein the doped zinc oxide powder is in the form of aggregates of primary particles having a mean maximum diameter of from 30 to 400 nm. It is prepared by oxidation from zinc powder and at least one doping agent, wherein the process zones vaporisation, nucleation, oxidation and quenching are passed through and the doping agent is metered in in the nucleation zone, in which the temperature is below the boiling temperature of zinc. The doped zinc oxide powder can be used in electrically conductive lacquers and coatings.