Patents by Inventor Hans-Juergen Sturm

Hans-Juergen Sturm 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).

  • Production of anthraquinone
    Patent number: 4151182
    Abstract: The invention relates to a process for the production of anthraquinone by catalytic oxidation of indans or diphenylmethane derivatives with oxygen in the presence of a vanadium (V) compound with or without one or more than one compund of potassium, boron, thallium, antimony and/or caesium. Anthraquinone which can be prepared by the process according to this invention is a valuable starting material for the production of dyes and pesticides.
    Type: Grant
    Filed: May 9, 1977
    Date of Patent: April 24, 1979
    Assignee: Badische Anilin- & Soda-Fabrik Aktiengesellschaft
    Inventors: Heinz Engelbach, Hermann Wistuba, Michael J. Sprague, Hans-Juergen Sturm, Herbert Armbrust