Patents by Inventor Wilhelm Westphal

Wilhelm Westphal 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).

  • Apparatus for reducing iron and vanadium in phosphoric acid solution
    Patent number: 4705671
    Abstract: Apparatus for reducing iron and vanadium in phosphoric acid solution with the aid of a granular reductant. The apparatus is comprised of a drum rotatable around its transverse axis. It is partially filled with the granular reductant and provided with inlets for supplying the phosphoric acid solution, the granular reductant and an inert gas, and also with a reaction product outlet.
    Type: Grant
    Filed: October 1, 1985
    Date of Patent: November 10, 1987
    Assignee: Hoechst Aktiengesellschaft
    Inventors: Herbert Ressel, Wilhelm Westphal