Patents by Inventor Tu Cam Nguyen

Tu Cam Nguyen 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 nitrogen production system using a single brazement
    Patent number: 6351969
    Abstract: A cryogenic nitrogen production plant wherein all the heat transfer steps, and preferably all the heat transfer and separation steps, are carried out in a brazement which receives feed air and from which is recovered product nitrogen.
    Type: Grant
    Filed: January 31, 2001
    Date of Patent: March 5, 2002
    Assignee: Praxair Technology, Inc.
    Inventors: Bayram Arman, Dante Patrick Bonaquist, Tu Cam Nguyen
  • System and method for producing high purity argon
    Patent number: 6351971
    Abstract: A process and system for producing a high purity argon product with high argon recovery from an air feed stream utilizing a low ratio argon distillation column, a high ratio argon distillation column and a vacuum pressure swing adsorption. unit in combination with a cryogenic air separation plant. The process and system avoids the necessity for an ultrastaged upper column in the cryogenic air separator plant.
    Type: Grant
    Filed: December 29, 2000
    Date of Patent: March 5, 2002
    Assignee: Praxair Technology, Inc.
    Inventors: Tu Cam Nguyen, Thomas John Bergman, Jr.
  • Cryogenic air separation system with integrated mass and heat transfer
    Publication number: 20010029751
    Abstract: A cryogenic air separation system comprising an integrated core and typically including a double column wherein incoming feed air is cooled in the core which also processes a stream from the double column. A separating section of the core processes a stream from the double column to form product.
    Type: Application
    Filed: March 20, 2001
    Publication date: October 18, 2001
    Inventors: Tu Cam Nguyen, Bayram Arman, Dante Patrick Bonaquist, Kenneth Kai Wong, John Fredric Billingham
  • Cryogenic air separation system with integrated mass and heat transfer
    Patent number: 6295839
    Abstract: A cryogenic air separation comprising an integrated core and typically including a double column wherein incoming feed air is cooled in the core which also processes a stream from the double column. A separating section of the core processes a stream from the double column to product.
    Type: Grant
    Filed: March 20, 2001
    Date of Patent: October 2, 2001
    Assignee: Praxair Technology, Inc.
    Inventors: Tu Cam Nguyen, Bayram Arman, Dante Patrick Bonaquist, Kenneth Kai Wong, John Fredric Billingham
  • Cryogenic air separation system with integrated mass and heat transfer
    Patent number: 6295836
    Abstract: A cryogenic air separation system comprising an integrated core and typically including a double column wherein incoming feed air is cooled in the core which also processes a stream from the double column. A separating section of the core processes a stream from the double column to form product.
    Type: Grant
    Filed: April 14, 2000
    Date of Patent: October 2, 2001
    Assignee: Praxair Technology, Inc.
    Inventors: Tu Cam Nguyen, Bayram Arman, Dante Patrick Bonaquist
  • Cryogenic air separation system using an integrated core
    Patent number: 6237366
    Abstract: A cryogenic air separation system wherein an integrated core receives and cools an incoming feed air stream, a rectification section facilitates mass transfer of the feed air stream, a separation section in a heat exchange relationship with the rectification section processes fluid from the rectification section, and a section in a heat exchange relationship with an entrance passage discharges fluid from the integrated core.
    Type: Grant
    Filed: April 14, 2000
    Date of Patent: May 29, 2001
    Assignee: Praxair Technology, Inc.
    Inventors: Bayram Arman, Tu Cam Nguyen, Dante Patrick Bonaquist, Kenneth Kai Wong
  • Cryogenic reflux condenser system for producing oxygen-enriched air
    Patent number: 6212906
    Abstract: A cryogenic separation arrangement wherein feed air is processed simultaneously through two regenerator systems and then separated in a reflux condenser, with product and waste from the reflux condenser processed through one and the other respectively of the regenerator systems.
    Type: Grant
    Filed: February 16, 2000
    Date of Patent: April 10, 2001
    Assignee: Praxair Technology, Inc.
    Inventors: Andrew Chun-Pong Lau, Thomas John Bergman, Jr., John Fredric Billingham, Tu Cam Nguyen
  • Cryogenic hybrid system for producing high purity argon
    Patent number: 5730003
    Abstract: A system for producing high purity argon wherein crude argon produced in a cryogenic rectification plant is processed in a pressure swing adsorption unit. Residual gas from the pressure swing adsorption unit is recycled to the cryogenic rectification plant and high purity argon is cooled prior to recovery against oxygen-containing fluid which is subsequently passed into the cryogenic rectification plant.
    Type: Grant
    Filed: March 26, 1997
    Date of Patent: March 24, 1998
    Assignee: Praxair Technology, Inc.
    Inventors: Tu Cam Nguyen, Mohamed Safdar Allie Baksh, Dante Patrick Bonaquist, Joseph Alfred Weber