Patents by Inventor James R. Hawkinson

James R. Hawkinson 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).

  • Tank fitting and method of use
    Patent number: 7121589
    Abstract: Tank fittings are provided. A tank fitting has a coupling. The coupling includes a flange disposed between a first end and a second end of the coupling. External threads are disposed between the flange and the first end. A gasket is disposed on the coupling between the flange and the first end of the coupling so as to abut the flange. The tank fitting also includes a nut that is threadably attachable to the external threads of the coupling.
    Type: Grant
    Filed: September 24, 2003
    Date of Patent: October 17, 2006
    Assignee: Norwesco, Inc.
    Inventors: James R. Hawkinson, Jerome T. Paulson