Patents by Inventor Wilhelm Kaufmann

Wilhelm Kaufmann 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 reducing the concentration of by-products in product mixtures
    Patent number: 5770752
    Abstract: The present invention relates to a process for reducing the concentration of organometallic and/or inorganic by-products in product mixtures formed in the synthesis of metallocenes, which comprises treating a mixture comprising one or more metallocenes and one or more organometallic and/or inorganic by-products with a polar extractant.
    Type: Grant
    Filed: December 18, 1996
    Date of Patent: June 23, 1998
    Assignee: Targor GmbH
    Inventors: Wilhelm Kaufmann, Thomas Wisser, Johann Streb, Thomas Rink, Roland Zenk, Michael Riedel, Ivan Cabrera