Patents by Inventor Dirk Ganzer

Dirk Ganzer 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 preparation of nitrodiphenylamines
    Patent number: 6815562
    Abstract: The present invention relates to a process for the preparation of nitrodiphenylamines by reaction of nitrohalogens with anilines, a base and a catalyst, and to a process for the preparation of aminodiphenylamine by hydrogenation of the nitrodiphenylamine intermediately prepared.
    Type: Grant
    Filed: January 2, 2004
    Date of Patent: November 9, 2004
    Assignee: Bayer Aktiengesellschaft
    Inventors: Klaus Kunz, Joachim Haider, Dirk Ganzer, Ulrich Scholz, Adolf Sicheneder
  • Copper-carbene complexes and their use
    Publication number: 20040192664
    Abstract: The invention relates to copper-carbene complexes, to a process for preparing them and to their use in catalytic coupling reactions.
    Type: Application
    Filed: January 6, 2004
    Publication date: September 30, 2004
    Inventors: Klaus Kunz, Ulrich Scholz, Oliver Gaertzen, Dirk Ganzer, Joachim Wesener
  • Process for the preparation of nitrodiphenylamines
    Publication number: 20040143138
    Abstract: The present invention relates to a process for the preparation of nitrodiphenyl-amines by reaction of nitrohalogens with anilines a base and a catalyst, and to a process for the preparation of aminodiphenylamine by hydrogenation of the nitrodiphenylamine intermediately prepared.
    Type: Application
    Filed: January 2, 2004
    Publication date: July 22, 2004
    Inventors: Klaus Kunz, Joachim Haider, Dirk Ganzer, Ulrich Scholz, Adolf Sicheneder