Patents by Inventor John L. Spranger

John L. Spranger 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).

  • POLYIMIDE RESIN GASKETS FOR DISS OUTLET VALVES
    Publication number: 20110031702
    Abstract: Gaskets made of a polyimide resin material for use in DISS valve connections are disclosed. Polyimide resin gaskets are relatively low cost and can be used in all types of operations requiring DISS connections. Polyimide gaskets exhibit negligible creep and can be used for long periods of time without significant deterioration of the leak rate.
    Type: Application
    Filed: August 7, 2009
    Publication date: February 10, 2011
    Inventors: D. Bruce WILSON, John L. Spranger