Patents by Inventor Mark A. Herbstrith

Mark A. Herbstrith 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 of controlling self-ignition of low rank coal
    Patent number: 4759772
    Abstract: Self-ignition of low rank coal is inhibited by application of a permanganate salt, such as potassium permanganate, together with a phosphorus compound, such as a phosphoric or polyphosphoric acid. The inhibitors are applied in aqueous solution following drying of the particulate coal. The combination treatment is much more effective than the use of a permanganate salt alone.
    Type: Grant
    Filed: July 22, 1987
    Date of Patent: July 26, 1988
    Assignee: Carus Corporation
    Inventors: Edward S. Rogers, Arno H. Reidies, Mark A. Herbstrith