Patents by Inventor Hans Vries

Hans Vries 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).

  • Publication number: 20080269529
    Abstract: The invention relates to an enantiomerically enriched chiral compound comprising a transition metal M, which comprises four, five or six coordinating groups of which at least one pair is linked together to form a bidentate ligand, in which M is directly bound via one single ?-bond to a carbon atom of an optionally substituted and/or optionally fused (hetero)aromatic ring of said bidentate ligand and in which M is directly bound to a nitrogen atom of a primary or secondary amino group of said bidentate ligand, thereby forming a metallacycle between said bidentate ligand and the metal M, said metal M being selected from the metals of groups 8 and 9 of the Periodic Table of the Elements, in particular iron, ruthenium, osmium, cobalt, rhodium, or iridium. The chiral compound can be used as a catalyst, preferably in an asymmetric transfer hydrogenation process.
    Type: Application
    Filed: November 10, 2005
    Publication date: October 30, 2008
    Inventors: Johannes Gerardus (Hans) Vries De, Gerardus Karel Maria Verzijl, Andreas Hendrikus Maria Vries De, Vincent Ritleng, Adeline Marie Josephe Voelklin
  • Publication number: 20060137990
    Abstract: The invention concerns a method for electrolytic coating of materials with aluminum, magnesium or aluminum and magnesium alloys. Said method is characterized in that the material is pretreated by being immersed in an electrolytic solution, where it is anodized, the electrolytic coating being performed immediately after in the same electrolytic solution.
    Type: Application
    Filed: July 15, 2003
    Publication date: June 29, 2006
    Applicant: Aluminal Oberflachentechnik GmbH & Co., KG
    Inventors: Jorg Heller, Hans Vries, Matthias Hartel