Patents by Inventor Pat F. Hopkins

Pat F. Hopkins 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).

  • Method and apparatus for dispensing compressed gas into a vehicle
    Patent number: 5406988
    Abstract: A method and apparatus for dispensing compressed gas from n storage vessels containing compressed gas. Gas is sequentially dispensed from each of the storage vessels until predetermined delivery conditions are reached for each storage vessel. After the predetermined delivery conditions are reached in storage vessel n, storage vessel n is backfilled using the remaining compressed gas from the other storage vessels. The backfilling provides greater extraction of stored gas in the storage vessels and consistently fast fill times.
    Type: Grant
    Filed: December 1, 1993
    Date of Patent: April 18, 1995
    Assignee: Pacific Cryogenics, Inc.
    Inventor: Pat F. Hopkins