Patents by Inventor Norman L. Grauerholz

Norman L. Grauerholz 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).

  • Method for separating a mixture of molten oxidized ferrophosphorus and refined ferrophosphorus
    Patent number: 4152138
    Abstract: A molten mixture of oxidized ferrophosphorus and refined ferrophosphorus is separated by contacting a free-falling stream of the molten mixture with a water jet or jets aligned with the longitudinal axis of an inclined collecting trough.
    Type: Grant
    Filed: March 13, 1978
    Date of Patent: May 1, 1979
    Assignee: Union Carbide Corporation
    Inventors: Robert L. Ripley, Norman L. Grauerholz, Duane L. Johnson