Patents by Inventor David Stehouwer

David Stehouwer 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).

  • Acid-Neutralizing Filter Media
    Publication number: 20070267341
    Abstract: Acid-neutralizing filter media includes filter media fibers in combination with a strong base of small particle size and high surface area attached to and immobilized on the filter media fibers, and methodology therefor.
    Type: Application
    Filed: July 10, 2007
    Publication date: November 22, 2007
    Applicant: Fleetguard, Inc., a corporation organized under the laws of the State of Indiana
    Inventors: William Haberkamp, David Stehouwer, Barry Verdegan
  • Acid-neutralizing filter media
    Publication number: 20060032814
    Abstract: Acid-neutralizing filter media includes filter media fibers in combination with a strong base of small particle size and high surface area attached to and immobilized on the filter media fibers, and methodology therefor.
    Type: Application
    Filed: August 11, 2004
    Publication date: February 16, 2006
    Inventors: William Haberkamp, David Stehouwer, Barry Verdegan