Patents by Inventor Douglas J. Koutek

Douglas J. Koutek 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).

  • Roadway base intermediate, roadway base, and methods of manufacture
    Patent number: 6387175
    Abstract: A roadway base comprises oily sludge, steelmaking slag fines, and an additive selected from the group consisting of cement, fly ash, asphaltic emulsion, and mixtures thereof
    Type: Grant
    Filed: October 5, 2000
    Date of Patent: May 14, 2002
    Assignees: Bethlehem Steel Corporation, Environmental Recycling Technologies, Inc.
    Inventors: John D. Lynn, Leah M. Burge, Douglas J. Koutek, John L. Sullivan