Patents by Inventor Patrick R. Billman

Patrick R. Billman 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).

  • Surge dampening device for cryogenic vaporizers and heater elements
    Patent number: 5473905
    Abstract: An improved cryogenic vaporizer and heat-transfer element comprising a tubular housing having outer fin members, a central passage having an upper portion substantially closed to provide a restricted flow of fluid therefrom, an intermediate portion defining a deceleation chamber, and a lower portion in which is mounted a hollow rod that substantially controls the amplitude of liquid surging within the central passage of the housing.
    Type: Grant
    Filed: July 29, 1994
    Date of Patent: December 12, 1995
    Assignee: Cryoquip, Inc.
    Inventor: Patrick R. Billman