Patents by Inventor J. Barrett Pullman

J. Barrett Pullman 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).

  • Refrigerated filter assembly and method of using same
    Patent number: 4466257
    Abstract: The present invention is a self-aided refrigerated filter assembly and method for its use for filtration of liquid petroleum gas (LPG) so that a liquid phase is maintained during the filtration process and that the LPG is sufficiently subcooled to suppress the formation bubbles to prevent the risk of vapor lock or cavitation damages to a pump downflow from the filtration process and/or to provide liquid for metering purpose.
    Type: Grant
    Filed: August 17, 1982
    Date of Patent: August 21, 1984
    Assignee: Prodatek Corporation
    Inventors: Richard K. Pefley, J. Barrett Pullman