Patents by Inventor Dante Patrick Bonaquist

Dante Patrick Bonaquist 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 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 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
  • 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
  • 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
  • PFC recovery using condensation
    Patent number: 6257018
    Abstract: This invention is directed to a method, and a system therefor, for recovering PFC using condensation by passing a PFC-containing feed stream into a condenser, preferably reflux condenser, to effect liquefaction into a PFC-containing condensate and a carrier gas stream, and passing the PFC-containing product into a mass transfer unit to fractionate the PFC-containing condensate into a high volatility PFC stream and a PFC product.
    Type: Grant
    Filed: June 28, 1999
    Date of Patent: July 10, 2001
    Assignee: Praxair Technology, Inc.
    Inventors: Richard Martin Kelly, Dante Patrick Bonaquist
  • Cryogenic air separation process for producing elevated pressure gaseous oxygen
    Patent number: 6253577
    Abstract: A cryogenic air separation process having improved flexibility and operating efficiency for producing elevated pressure gaseous oxygen by vaporizing pressurized liquid oxygen wherein refrigeration generation for the process is decoupled from the flow of process streams and is produced by one or more multicomponent refrigerant fluid circuits.
    Type: Grant
    Filed: March 23, 2000
    Date of Patent: July 3, 2001
    Assignee: Praxair Technology, Inc.
    Inventors: Bayram Arman, Dante Patrick Bonaquist, Joseph Alfred Weber, Mark Edward Vincett
  • 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
  • Method for generating a cold gas
    Patent number: 6250096
    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: May 1, 2000
    Date of Patent: June 26, 2001
    Assignee: Praxair Technology, Inc.
    Inventors: Dante Patrick Bonaquist, Harry Cheung, Arun Acharya
  • 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 process for producing gaseous nitrogen and gaseous oxygen
    Patent number: 6230519
    Abstract: A cryogenic air separation process having improved flexibility and operating efficiency wherein refrigeration generation for the process is decoupled from the flow of process streams and is produced by one or more closed loop circuits.
    Type: Grant
    Filed: November 3, 1999
    Date of Patent: May 15, 2001
    Assignee: Praxair Technology, Inc.
    Inventors: Bayram Arman, Dante Patrick Bonaquist, Joseph Alfred Weber, Mark Edward Vincett
  • Cryogenic ultra cold hybrid liquefier
    Patent number: 6205812
    Abstract: A system for effectively generating refrigeration for use in putting a product fluid into an ultra cold condition wherein an active magnetic regenerator or a multicomponent refrigerant fluid cycle is integrated with a pulse tube system for receiving heat generated by the pulse tube system.
    Type: Grant
    Filed: December 3, 1999
    Date of Patent: March 27, 2001
    Assignee: Praxair Technology, Inc.
    Inventors: Arun Acharya, John Henri Royal, Christian Fredrich Gottzmann, Dante Patrick Bonaquist, Bayram Arman
  • Cryogenic indirect oxygen compression system
    Patent number: 6178776
    Abstract: A system for producing pressurized oxygen gas from low pressure oxygen gas without the need for engaging an oxygen compressor wherein low pressure oxygen gas is condensed by indirect heat exchange with a multicomponent refrigerant fluid, passed through a liquid pump, and then vaporized against that same multicomponent refrigerant fluid.
    Type: Grant
    Filed: October 29, 1999
    Date of Patent: January 30, 2001
    Assignee: Praxair Technology, Inc.
    Inventors: Kevin William Mahoney, Dante Patrick Bonaquist, Walter Joseph Olszewski
  • Cryogenic rectification system for producing very high purity oxygen
    Patent number: 6173586
    Abstract: A cryogenic air separation system for producing very high purity oxygen employing a lower pressure column having a volume in its lower portion set off by a diaphragm, and an upgrader column communicating with the lower pressure column in a defined manner relative to the diaphragm.
    Type: Grant
    Filed: August 31, 1999
    Date of Patent: January 16, 2001
    Assignee: Praxair Technology, Inc.
    Inventors: Dante Patrick Bonaquist, John Fredric Billingham
  • Cryogenic rectification method for producing nitrogen gas and liquid nitrogen
    Patent number: 6125656
    Abstract: A cryogenic rectification method wherein both nitrogen gas and liquid are efficiently produced from air employing one or two columns wherein refrigeration to drive the cryogenic separation is provided by a, preferably closed loop, multicomponent refrigerant fluid refrigeration circuit.
    Type: Grant
    Filed: November 3, 1999
    Date of Patent: October 3, 2000
    Assignee: Praxair Technology, Inc.
    Inventors: Bayram Arman, Dante Patrick Bonaquist, Joseph Alfred Weber, John Harold Ziemer, Arun Acharya, Mohannad Abdul-Aziz Rashad
  • Cryogenic rectification system and hybrid refrigeration generation
    Patent number: 6112550
    Abstract: A system for generating refrigeration and providing the refrigeration into a cryogenic rectification plant wherein, in addition to refrigeration generated by turboexpansion, further refrigeration for the plant is generated by a recirculating multicomponent refrigerant in a refrigeration circuit.
    Type: Grant
    Filed: December 30, 1998
    Date of Patent: September 5, 2000
    Assignee: Praxair Technology, Inc.
    Inventors: Dante Patrick Bonaquist, Bayram Arman, Joseph Alfred Weber, Walter Joseph Olszewski, Mark Edward Vincett
  • Variable load refrigeration system particularly for cryogenic temperatures
    Patent number: 6076372
    Abstract: A method for generating refrigeration, especially over a wide temperature range including cryogenic temperatures, wherein a non-toxic, non-flammable and low or non-ozone-depleting mixture is formed from defined components and maintained in variable load form through compression, cooling, expansion and warming steps in a refrigeration cycle.
    Type: Grant
    Filed: December 30, 1998
    Date of Patent: June 20, 2000
    Assignee: Praxair Technology, Inc.
    Inventors: Arun Acharya, Bayram Arman, Walter Joseph Olszewski, Dante Patrick Bonaquist, Joseph Alfred Weber
  • 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
  • Multicomponent refrigerant cooling with internal recycle
    Patent number: 6065305
    Abstract: A system for cooling a fluid particularly to a cryogenic temperature wherein a multicomponent refrigerant fluid is partially condensed, the liquid used to generate refrigeration to cool the product by recycle into an upstream portion of the warming leg of the refrigeration circuit, and the vapor, having a different composition than the liquid, is used to generate refrigeration at a colder temperature for further cooling of the product.
    Type: Grant
    Filed: December 30, 1998
    Date of Patent: May 23, 2000
    Assignee: Praxair Technology, Inc.
    Inventors: Bayram Arman, Walter Joseph Olszewski, Joseph Alfred Weber, Dante Patrick Bonaquist, Arun Acharya, John Henri Royal