Patents by Inventor Shanda Gardner Fry

Shanda Gardner Fry 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).

  • Cryogenic rectification system for producing high purity nitrogen
    Patent number: 6499312
    Abstract: A system for producing high and ultra high purity nitrogen comprising a first column for the production of nitrogen and a second column having a top condenser wherein boil off from the second column top condenser is turboexpanded to generate refrigeration for the system.
    Type: Grant
    Filed: December 4, 2001
    Date of Patent: December 31, 2002
    Assignee: Praxair Technology, Inc.
    Inventors: Thomas John Bergman, Jr., Shanda Gardner Fry, Jeremy Michael Cabral
  • Cryogenic rectification system for producing high pressure oxygen
    Patent number: 5829271
    Abstract: A cryogenic rectification system for producing high pressure oxygen wherein a portion of the feed air is condensed by indirect heat exchange with pressurized liquid oxygen and then passed, preferably after subcooling, into the lower pressure column of a double column system.
    Type: Grant
    Filed: October 14, 1997
    Date of Patent: November 3, 1998
    Assignee: Praxair Technology, Inc.
    Inventors: Nancy Jean Lynch, Dante Patrick Bonaquist, Shanda Gardner Fry