Patents by Inventor Mario Huettenhofer

Mario Huettenhofer 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 unsaturated transition metal compounds
    Patent number: 6765103
    Abstract: The invention relates to a process for preparing transition metal compounds having hydrogenated or partially hydrogenated monocyclic, bicyclic or polycyclic ligands, which is characterized in that the unsaturated monocyclic, bicyclic or polycyclic transition metal compound together with hydrogen is introduced continuously or all at once under pressure into a static mixer in the presence of a suitable solubilizer and a catalyst.
    Type: Grant
    Filed: December 11, 2002
    Date of Patent: July 20, 2004
    Assignee: Crompton GmbH
    Inventors: Burkhardt Giese, Richard Lisowsky, Jan Timmermann, Thomas Wanke, Mario Hüttenhofer
  • Process for the preparation of alkali metal tetraalkylaluminates and use thereof
    Patent number: 6734317
    Abstract: The present invention relates to a process for preparing alkali metal tetraalkylaluminates, in particular potassium tetraethylaluminate, and also to the use of such an aluminate complex in aluminum deposition by electroplating-electrolysis.
    Type: Grant
    Filed: May 27, 2003
    Date of Patent: May 11, 2004
    Assignee: Crompton GmbH
    Inventors: Peter Heitmann, Thomas Wanke, Mario Hüttenhofer
  • Selective preparation of racemic ansa-metallocene complexes
    Patent number: 5892081
    Abstract: The present invention relates to a process for preparing racemic ansa-metallocene complexes I ##STR1## tin compounds II ##STR2## and a process for preparing tin compounds II. R.sup.1 to R.sup.9, M, and X are defined herein.
    Type: Grant
    Filed: July 13, 1998
    Date of Patent: April 6, 1999
    Assignee: BASF Aktiengesellschaft
    Inventors: Carsten Suling, Mario Huettenhofer, Hans-Herbert Brintzinger, Frank Schaper