Patents by Inventor Herbert J. Clausen

Herbert J. Clausen 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 partial removing of impurities from a wet process phosphoric acid
    Patent number: 4493820
    Abstract: A process for the partial removal of impurities present in a wet process phosphoric acid used in the production of granulated mono- or di-ammonium phosphate fertilizers in order to control the grade of the final product. All or a portion of the liquid from the primary scrubbers is clarified to remove the precipitated impurities and the clarified flow is then fed into the reactor along with any unclarified portions of the primary scrubber liquid.
    Type: Grant
    Filed: October 1, 1982
    Date of Patent: January 15, 1985
    Assignee: Gardinier, Inc.
    Inventor: Herbert J. Clausen