Patents by Inventor Mark A. Koke

Mark A. Koke 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).

  • Plastic lined fittings for use with flangeless piping systems
    Patent number: 5954371
    Abstract: Plastic-lined fittings and their method of manufacture. The fittings are capable of being joined without flanges to plastic-lined piping systems. The fittings feature a zero tolerance fit between the liner and the metal portion of the fitting, and an outward expansion of the portion of the liner which extends past the metal portion.
    Type: Grant
    Filed: April 14, 1997
    Date of Patent: September 21, 1999
    Assignee: Crane Co.
    Inventors: Mark A. Koke, James A. Yanacek, Gerald A. Miller, Brian W. Krause