Patents by Inventor Joerg Pietsch

Joerg Pietsch has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • PROCESS FOR PREPARING A DISPERSION COMPRISING TITANIUM-SILICON MIXED OXIDE
    Publication number: 20110171120
    Abstract: Process for preparing an aqueous dispersion which has a pH of 9 to 14 and comprises particles of a pyrogenic titanium-silicon mixed oxide powder having a proportion of silicon dioxide of 75 to 99.99% by weight and of titanium dioxide of 0.01 to 25% by weight, whose mean aggregate diameter in the dispersion is not more than 200 nm, and at least one basic, quaternary ammonium compound.
    Type: Application
    Filed: September 25, 2008
    Publication date: July 14, 2011
    Applicant: EVONIK DEGUSSA GmbH
    Inventors: Wolfgang Lortz, Kai Schumacher, Joerg Pietsch