Patents Represented by Attorney, Agent or Law Firm Stanley Ktorides
  • Fluid cooled coherent jet lance
    Patent number: 6334976
    Abstract: A lance which may be used to generate a longer coherent gas jet having inflowing and outflowing coolant fluid passages which are in flow communication and which straddle the flame envelope fluid passages, all of which are coaxial with the main passageway.
    Type: Grant
    Filed: August 3, 2000
    Date of Patent: January 1, 2002
    Assignee: Praxair Technology, Inc.
    Inventors: John Erling Anderson, William John Mahoney, Balu Sarma, Dennis Robert Farrenkopf
  • Compression system for cryogenic refrigeration with multicomponent refrigerant
    Patent number: 6330811
    Abstract: A system for generating refrigeration wherein a multicomponent refrigerant is compressed in a compressor lubricated with polyalphaolefin-based oil, the oil is removed from the compressed refrigerant, and the compressed refrigerant is expanded to generate refrigeration at a cryogenic temperature for provision to a refrigeration receptor.
    Type: Grant
    Filed: June 29, 2000
    Date of Patent: December 18, 2001
    Assignee: Praxair Technology, Inc.
    Inventors: Bayram Arman, Dante Patrick Bonaquist
  • 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
  • Cryogenic rectification system for producing ultra high purity oxygen
    Patent number: 6327873
    Abstract: A cryogenic rectification system comprising an upstream krypton/xenon knockout column and a downstream oxygen upgrader column wherein the knockout column processes a crude feed for removal of heavy components including hydrocarbons and the upgrader column produces ultra high purity oxygen.
    Type: Grant
    Filed: June 14, 2000
    Date of Patent: December 11, 2001
    Assignee: Praxair Technology Inc.
    Inventors: James Robert Dray, Scot Eric Jaynes
  • 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
  • Structured packing system for reduced distillation column height
    Patent number: 6321567
    Abstract: A system particularly useful for the cryogenic rectification of air to produce product, particularly high purity argon, comprising a structured packing arrangement having a defined moderate area density, a defined sharp corrugation angle and at least one of a defined short brick height and a defined packing structure modification.
    Type: Grant
    Filed: October 6, 2000
    Date of Patent: November 27, 2001
    Assignee: Praxair Technology, Inc.
    Inventors: Michael James Lockett, John Fredric Billingham
  • Structured packing with asymmetric crimp pattern
    Patent number: 6314756
    Abstract: A corrugated structured packing for forming into modules for use in a rectification column, having a crimp pattern which is asymmetrical about a line drawn perpendicular to the centerline of the structured packing sheet and whose axial distance along the centerline from trough to adjacent peak is not evenly divided on either side of the centerline, serving to reduce pressure losses that are not efficient in promoting mass transfer and thus reducing the requisite column height.
    Type: Grant
    Filed: September 7, 2000
    Date of Patent: November 13, 2001
    Assignee: Praxair Technology, Inc.
    Inventors: Michael James Lockett, John Fredric Billingham
  • Cryogenic rectification system for processing atmospheric fluids
    Patent number: 6314757
    Abstract: A cryogenic rectification system comprising a rare gas concentrator column for producing a liquid having an enhanced concentration of krypton and xenon, and which processes atmospheric fluids and also produces gaseous oxygen and liquid nitrogen.
    Type: Grant
    Filed: August 25, 2000
    Date of Patent: November 13, 2001
    Assignee: Prakair Technology, Inc.
    Inventors: James Robert Dray, Theodore Fringelin Fisher
  • Method for generating a cold gas
    Patent number: 6301923
    Abstract: A method for generating refrigeration for application to a heat load, especially at very cold temperatures, using an environmentally benign working gas such as air and using an upstream precooling circuit to reduce or eliminate inefficiencies stemming from warm end pinch.
    Type: Grant
    Filed: March 21, 2001
    Date of Patent: October 16, 2001
    Assignee: Praxair Technology, Inc.
    Inventors: Dante Patrick Bonaquist, Harry Cheung, Arun Acharya
  • 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 and gas turbine integration using heated nitrogen
    Patent number: 6295838
    Abstract: An integrated cryogenic air separation gas turbine system wherein heat of compression within the feed air is provided to nitrogen produced in the cryogenic air separation plant and the heated nitrogen is provided to a gas turbine along with combustion reaction products to produce power.
    Type: Grant
    Filed: August 16, 2000
    Date of Patent: October 2, 2001
    Assignee: Praxair Technology, Inc.
    Inventors: Minish Mahendra Shah, Raymond Francis Drnevich, Nancy Jean Lynch, Kevin William Mahoney
  • 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
  • Magnetic refrigeration system with multicomponent refrigerant fluid forecooling
    Patent number: 6293106
    Abstract: A system for generating refrigeration and providing refrigeration to a heat load at a very cold temperature which includes a forecooling circuit using a multicomponent refrigerant fluid and a magnetic refrigeration circuit which provides refrigeration to the heat load and which rejects heat into the forecooling circuit.
    Type: Grant
    Filed: May 18, 2000
    Date of Patent: September 25, 2001
    Assignee: Praxair Technology, Inc.
    Inventors: Arun Acharya, Bayram Arman
  • Cryogenic air separation system for elevated pressure product
    Patent number: 6286336
    Abstract: A cryogenic air separation system particularly useful for producing elevated pressure product wherein additional reflux is generated by a heat pump circuit operating between the upper portion and an intermediate location of the lower pressure column of a double column.
    Type: Grant
    Filed: May 3, 2000
    Date of Patent: September 11, 2001
    Assignee: Praxair Technology, Inc.
    Inventor: Neil Mark Prosser
  • Cryogenic air separation system with split kettle recycle
    Patent number: 6279345
    Abstract: A cryogenic air separation system, which may be used to produce ultra high purity nitrogen or ultra high purity oxygen, wherein kettle liquid is vaporized in two steps using a split kettle top condenser and vapor from the first step compressed and then recycled to the cryogenic rectification column.
    Type: Grant
    Filed: May 18, 2000
    Date of Patent: August 28, 2001
    Assignee: Praxair Technology, Inc.
    Inventors: Bayram Arman, Dante Patrick Bonaquist
  • Cryogenic air separation system for producing oxygen
    Patent number: 6279344
    Abstract: A cryogenic air separation system for producing oxygen employing a double column and a side column wherein side column liquid is vaporized against nitrogen heat pump fluid taken from the higher pressure column of the double column and then used to reflux the higher pressure and/or lower pressure columns of the double column.
    Type: Grant
    Filed: June 1, 2000
    Date of Patent: August 28, 2001
    Assignee: Praxair Technology, Inc.
    Inventors: Raymond Francis Drnevich, Minish Mahendra Shah
  • Rapid restart system for cryogenic air separation plant
    Patent number: 6272884
    Abstract: A system for re-starting an air separation plant after an interruption in operation wherein descending liquid is collected in a non-operating distillation column and passed back to the separation section of that column before or upon re-start. The invention may employ a collection device situated in the column above the sump. Upon interruption in operation, the collection device accumulates descending liquid. From the collection device, liquid may be passed outside of the column and transferred to a holding vessel to re-inventory internal material of the column upon resumption in operation.
    Type: Grant
    Filed: April 8, 1998
    Date of Patent: August 14, 2001
    Assignee: Praxair Technology, Inc.
    Inventors: John Fredric Billingham, Dante Patrick Bonaquist, James Robert Dray, Michael James Lockett, Robert Arthur Beddome
  • Cryogenic rectification system with pulse tube refrigeration
    Patent number: 6269658
    Abstract: A cryogenic rectification system wherein some or all of the refrigeration necessary to drive the rectification is generated by providing a pulse to a gas and then passing the compressed gas to a pulse tube wherein the gas expands in a wave generating refrigeration at one end of the pulse tube for transfer into the rectification system.
    Type: Grant
    Filed: June 28, 2000
    Date of Patent: August 7, 2001
    Assignee: Praxair Technology, Inc.
    Inventors: John Henri Royal, Arun Acharya, Christian Friedrich Gottzmann, Dante Patrick Bonaquist, Bayram Arman, Joseph Alfred Weber
  • Gas and powder delivery system and method of use
    Patent number: 6261338
    Abstract: An arrangement wherein a coherent jet is established proximate to a powder injection system and the coherent jet not only provides for gas delivery but also serves to improve the efficiency of the delivery of powder from the powder injection system.
    Type: Grant
    Filed: October 12, 1999
    Date of Patent: July 17, 2001
    Assignee: Praxair Technology, Inc.
    Inventors: William John Mahoney, John Erling Anderson
  • Cryogenic air separation process for producing liquid oxygen
    Patent number: 6260380
    Abstract: A cryogenic air separation process for producing liquid oxygen and other liquid products wherein refrigeration generation for the process is decoupled from the flow of process streams and is produced at least in part by at least on multicomponent refrigerant fluid refrigeration circuit.
    Type: Grant
    Filed: March 23, 2000
    Date of Patent: July 17, 2001
    Assignee: Praxair Technology, Inc.
    Inventors: Bayram Arman, Dante Patrick Bonaquist, Joseph Alfred Weber, Mark Edward Vincett