Patents by Inventor Keith A. Gustafson

Keith A. Gustafson 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).

  • Vehicle mounted LNG delivery system
    Patent number: 5163409
    Abstract: The present invention uses an on-board source of compressed natural gas (CNG) to pressurize the LNG in the vehicle's LNG storage tanks such that high pressure natural gas can be delivered to the use device. More than one LNG storage tank can be used without increasing the amount of CNG required if the storage tanks are connected together in series so that the upstream storage tank pressurizes the downstream storage tank.
    Type: Grant
    Filed: February 18, 1992
    Date of Patent: November 17, 1992
    Assignee: Minnesota Valley Engineering, Inc.
    Inventors: Keith Gustafson, George W. Kalet