Patents by Inventor Otto Neunhoeffer

Otto Neunhoeffer 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).

  • Novel process for removal of cadmium ions
    Patent number: 4425236
    Abstract: A novel process for the selective removal of cadmium ions from aqueous media such as sewage by contacting the aqueous media with an effective amount of at least one water-insoluble organic polysulfide compound to selectively remove the cadmium ions and separating the polysulfide compounds.
    Type: Grant
    Filed: December 6, 1982
    Date of Patent: January 10, 1984
    Assignee: Rutgerswerke Aktiengesellschaft
    Inventors: Otto Neunhoeffer, Gerhard Wilhelm, Lothar Hockenberger, Franz J. Bergmann, Peter Endruscheit