Patents by Inventor Louis C. D. Kerpan

Louis C. D. Kerpan 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).

  • Explosive composition comprising waste oil, ammonium nitrate and lignite
    Patent number: 5397405
    Abstract: An explosive composition for mining operations has been produced using waste oil, lignite and ammonium nitrate in selected ranges of concentrations.
    Type: Grant
    Filed: April 1, 1993
    Date of Patent: March 14, 1995
    Assignee: Peace Recovery Systems Ltd.
    Inventors: Sydney O. Smith, Louis C. D. Kerpan