Patents by Inventor Kenneth Kai Wong

Kenneth Kai Wong 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).

  • Multicomponent refrigeration fluid refrigeration system with auxiliary ammonia cascade circuit
    Patent number: 6494054
    Abstract: A refrigeration system wherein an ammonia refrigerant fluid in a cascade refrigeration circuit provides auxiliary refrigeration to a multicomponent refrigerant fluid which passes from an autorefrigerator to provide refrigeration to a heat load.
    Type: Grant
    Filed: August 16, 2001
    Date of Patent: December 17, 2002
    Assignee: Praxair Technology, Inc.
    Inventors: Kenneth Kai Wong, Boris Yudin, Dante Patrick Bonaquist, Mohammad Abdul-Aziz Rashad
  • Cryogenic system for producing high purity argon
    Publication number: 20020174680
    Abstract: A system for purifying and reclaiming argon from an industrial process wherein oxygen is removed by hydrogenation and dehydration, and nitrogen and hydrogen are removed by cryogenic separation.
    Type: Application
    Filed: May 22, 2001
    Publication date: November 28, 2002
    Inventors: Kenneth Kai Wong, Dante Patrick Bonaquist
  • Integrated heat exchanger system for producing carbon dioxide
    Patent number: 6477859
    Abstract: A system for producing carbon dioxide wherein carbon dioxide feed fluid is first processed in a cooling section of an integrated heat exchanger before purification in a column, and wherein column bottom fluid operates within one of an evaporating section and desuperheating section of the heat exchanger and refrigerant fluid operates within the other of the evaporating section and desuperheating section of the heat exchanger.
    Type: Grant
    Filed: December 4, 2001
    Date of Patent: November 12, 2002
    Assignee: Praxair Technology, Inc.
    Inventors: Kenneth Kai Wong, Dante Patrick Bonaquist, Henry Edward Howard
  • Method for providing refrigeration using a turboexpander cycle
    Patent number: 6438994
    Abstract: A method for generating refrigeration using a turboexpander or reverse Brayton cycle which can more efficiently generate refrigeration especially to cryogenic temperatures using a defined refrigerant mixture containing argon and/or nitrogen.
    Type: Grant
    Filed: September 27, 2001
    Date of Patent: August 27, 2002
    Assignee: Praxair Technology, Inc.
    Inventors: Mohammad Abdul-Aziz Rashad, Kenneth Kai Wong, Henry Edward Howard, Dante Patrick Bonaquist, Bayram Arman
  • Cryogenic refrigeration system
    Patent number: 6425264
    Abstract: A cryogenic refrigeration system wherein refrigeration is provided to a heat load by a warming multicomponent refrigerant fluid recirculating in a refrigeration circuit and by cryogenic liquid separately provided to the heat load in direct or indirect heat exchange with the heat load.
    Type: Grant
    Filed: August 16, 2001
    Date of Patent: July 30, 2002
    Assignee: Praxair Technology, Inc.
    Inventors: Kenneth Kai Wong, Richard A. Novak, Michael John Sinicropi, Dante Patrick Bonaquist
  • Integrated heat exchanger system for producing carbon dioxide
    Publication number: 20020059807
    Abstract: A system for producing carbon dioxide wherein carbon dioxide feed fluid is first processed in a cooling section of an integrated heat exchanger before purification in a column, and wherein column bottom fluid operates within one of an evaporating section and desuperheating section of the heat exchanger and refrigerant fluid operates within the other of the evaporating section and desuperheating section of the heat exchanger.
    Type: Application
    Filed: December 4, 2001
    Publication date: May 23, 2002
    Inventors: Kenneth Kai Wong, Dante Patrick Bonaquist, Henry Edward Howard
  • System for operating cryogenic liquid tankage
    Patent number: 6336331
    Abstract: A system wherein flashoff losses from cryogenic liquid tankage are reduced wherein fluid from the tankage is condensed and subcooled against refrigeration bearing refrigerant fluid generated by an exogenous refrigeration system.
    Type: Grant
    Filed: August 1, 2000
    Date of Patent: January 8, 2002
    Assignee: Praxair Technology, Inc.
    Inventors: Norman Henry White, Kenneth Kai Wong, William Martin Greene, III, Dante Patrick Bonaquist, Arun Acharya, Bayram Arman
  • Food freezing method using a multicomponent refrigerant
    Patent number: 6327866
    Abstract: A method for providing refrigeration, such as to an insulated enclosure for food freezing, wherein a defined hydrocarbon-containing multicomponent refrigerant fluid undergoes a phase change coupled with Joule-Thomson expansion to generate refrigeration over a wide temperature range which may comprise from ambient to low temperatures.
    Type: Grant
    Filed: June 28, 2000
    Date of Patent: December 11, 2001
    Assignee: Praxair Technology, Inc.
    Inventors: Richard A. Novak, Gary D. Lang, Arun Acharya, John Henri Royal, Kenneth Kai Wong, Bayram Arman
  • Refrigeration system with coupling fluid stabilizing circuit
    Patent number: 6327865
    Abstract: A refrigeration system wherein refrigeration is generated at a relatively steady output by a refrigeration circuit and passed into a coupling fluid for transfer to a refrigeration load using a coupling fluid stabilizing circuit having a stabilizing reservoir.
    Type: Grant
    Filed: August 25, 2000
    Date of Patent: December 11, 2001
    Assignee: Praxair Technology, Inc.
    Inventors: Dante Patrick Bonaquist, Kenneth Kai Wong, Richard Amory Victor, Bayram Arman
  • 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
  • Integrated heat exchanger system for producing carbon dioxide
    Publication number: 20010004838
    Abstract: A system for producing carbon dioxide wherein carbon dioxide feed fluid is first processed in a cooling section of an integrated heat exchanger before purification in a column, and wherein column bottom fluid operates within one of an evaporating section and desuperheating section of the heat exchanger and refrigerant fluid operates within the other of the evaporating section and desuperheating section of the heat exchanger.
    Type: Application
    Filed: January 9, 2001
    Publication date: June 28, 2001
    Inventors: Kenneth Kai Wong, Dante Patrick Bonaquist, Henry Edward Howard
  • 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 air separation system for producing elevated pressure oxygen
    Patent number: 6073462
    Abstract: A cryogenic air separation system employing a double column wherein lower pressure column bottom liquid is pressurized in a single cryogenic liquid pump to provide driving fluid for the main condenser and to provide product elevated pressure oxygen.
    Type: Grant
    Filed: March 30, 1999
    Date of Patent: June 13, 2000
    Assignee: Praxair Technology, Inc.
    Inventors: Kenneth Kai Wong, Dante Patrick Bonaquist, James Bragdon Wulf
  • Annular column for cryogenic rectification
    Patent number: 6023945
    Abstract: An annular column, particularly useful for cryogenic rectification, comprising coaxially oriented, radially spaced cylindrical column walls defining a first column region, and a second column region between the walls, wherein different fluid mixtures are rectified in each of the first column and second column regions.
    Type: Grant
    Filed: June 11, 1999
    Date of Patent: February 15, 2000
    Assignee: Praxair Technology, Inc.
    Inventors: Kenneth Kai Wong, John Frederic Billingham, Dante Patrick Bonaquist, Bayram Arman, Raymond Francis Drnevich, Minish Mahendra Shah, Todd Alan Skare
  • Annular column for cryogenic rectification
    Patent number: 5946942
    Abstract: An annular column, particularly useful for cryogenic rectification, comprising coaxially oriented, radially spaced cylindrical column walls defining a first column region, and a second column region between the walls, wherein different fluid mixtures are rectified in each of the first column and second column regions.
    Type: Grant
    Filed: August 5, 1998
    Date of Patent: September 7, 1999
    Assignee: Praxair Technology, Inc.
    Inventors: Kenneth Kai Wong, John Frederic Billingham, Dante Patrick Bonaquist, Bayram Arman, Raymond Francis Drnevich, Minish Mahendra Shah, Todd Alan Skare
  • Cryogenic rectification system with integral product boiler
    Patent number: 5901578
    Abstract: A cryogenic rectification system wherein a product boiler is incorporated into the primary heat exchanger without encountering boiling to dryness problems wherein liquid from the cryogenic rectification plant is processed in a phase separator upstream of the product boiler, and fluid from the product boiler is passed into the phase separator prior to recovery.
    Type: Grant
    Filed: May 18, 1998
    Date of Patent: May 11, 1999
    Assignee: Praxair Technology, Inc.
    Inventors: Kenneth Kai Wong, Michael James Lockett, Dante Patrick Bonaquist, Vijayaraghavan Srinivasan, John Keller Howell
  • Cryogenic rectification system with modular cold boxes
    Patent number: 5896755
    Abstract: A cryogenic rectification system for producing oxygen having a feed air preparation system and a plurality of same size cold box modules operating in parallel and in conjunction with the feed air preparation system.
    Type: Grant
    Filed: July 10, 1998
    Date of Patent: April 27, 1999
    Assignee: Praxair Technology, Inc.
    Inventors: Kenneth Kai Wong, Dante Patrick Bonaquist, John Frederic Billingham, Michael Douglas Monteith, Neil Mark Prosser