Patents by Inventor Neal D. Stidham

Neal D. Stidham 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).

  • Low rank coal by wet oxidizing, drying and cooling
    Patent number: 4797136
    Abstract: The spontaneous ignition of low rank coal is inhibited by spraying coal with an aqueous solution of an oxidizing agent which contains combined oxygen, drying oxidizing agent-sprayed coal and cooling the dried coal.
    Type: Grant
    Filed: March 15, 1988
    Date of Patent: January 10, 1989
    Assignee: Shell Oil Company
    Inventors: Mark A. Siddoway, Neal D. Stidham, William C. Machmer