Patents by Inventor John D. Nickerson

John D. Nickerson 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 the manufacture of phosphoric acid with minimized environmental effects
    Patent number: 3932591
    Abstract: An improved process for preparing wet process phosphoric acid by calcining a phosphate source at a temperature in the range of 1600.degree. - 2200.degree.F. The phosphate source may be wet or dry mined phosphate matrix, phosphate slimes, phosphate pebble or other phosphate source.
    Type: Grant
    Filed: April 19, 1972
    Date of Patent: January 13, 1976
    Assignee: United States Steel Corporation
    Inventors: Rogelio Serge Ribas, John D. Nickerson