Patents by Inventor Jörg Pietsch

Jörg 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 the hydrogenation of aromatic compounds
    Patent number: 8148430
    Abstract: The present invention focuses on a process for the hydrogenation of aromatic or heteroaromatic compounds and in particular on the ring hydrogenation of compounds having the formula (I). Aromatic amino acids and amino alcohols can be successfully ring-hydrogenated using a platinum-rhodium mixed catalyst. The products can be used inter alia as mimetics in bioactive peptide active ingredients.
    Type: Grant
    Filed: June 19, 2004
    Date of Patent: April 3, 2012
    Assignee: Evonik Degussa GmbH
    Inventors: Rolf Hartung, Franz Hitzel-Zerrahn, Thomas Müller, Jörg Pietsch
  • 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
  • Process for the hydrogenation of aromatic compounds
    Publication number: 20060205954
    Abstract: The present invention focuses on a process for the hydrogenation of aromatic or heteroaromatic compounds and in particular on the ring hydrogenation of compounds having the formula (I). Aromatic amino acids and amino alcohols can be successfully ring-hydrogenated using a platinum-rhodium mixed catalyst. The products can be used inter alia as mimetics in bioactive peptide active ingredients.
    Type: Application
    Filed: June 19, 2004
    Publication date: September 14, 2006
    Applicant: Degussa AG
    Inventors: Rolf Hartung, Franz Hitzel-Zerrahn, Thomas Müller, Jörg Pietsch
  • Method for carrying out-CC-coupling reactions
    Patent number: 7102045
    Abstract: The invention relates to a method for carrying out CC-coupling reactions, in particular a Heck and Suzuki reaction, in the presence of supported palladium as the catalyst and a base in a monophase or multiphase solvent mixture. According to said method, palladium detaches itself from the support in a characteristic manner, is redeposited after the reaction and the quantity of palladium not deposited after the reaction is significantly lower than 5000 ppm, in relation to the palladium used.
    Type: Grant
    Filed: July 18, 2001
    Date of Patent: September 5, 2006
    Assignee: Degussa AG
    Inventors: Jürgen Krauter, Jörg Pietsch, Peter Panster, Klaus Köhler, Roland Heidenreich