Patents by Inventor Nancy Jean Lynch

Nancy Jean Lynch 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).

  • Superconducting cable cooling system
    Patent number: 7395675
    Abstract: A superconducting cable cooling system, wherein coolant continually provides cooling to superconducting cable, comprising a plurality of nodes within a superconducting cable network and a plurality of legs of superconducting cable which interconnect each of the nodes of the superconducting cable network.
    Type: Grant
    Filed: November 14, 2005
    Date of Patent: July 8, 2008
    Assignee: Praxair Technology, Inc.
    Inventors: John Henri Royal, Barry Minbiole, Jalal Hunain Zia, Nancy Jean Lynch
  • Methods for operating a pulse tube cryocooler system with mean pressure variations
    Patent number: 7165407
    Abstract: A method for operating a pulse tube cryocooler system wherein in the event the mean pressure of the working gas within the fixed volume of the cryocooler undergoes a change, the operation of the system is kept from severe degradation by changing the frequency of the pressure wave generator driving the cryocooler directly with the change in the mean pressure.
    Type: Grant
    Filed: March 23, 2004
    Date of Patent: January 23, 2007
    Assignee: Praxair Technology, Inc.
    Inventor: Nancy Jean Lynch
  • Cryogenic neon refrigeration system
    Patent number: 6523366
    Abstract: A system for generating low temperature refrigeration for use such as cooling superconducting cable wherein a neon based refrigerant fluid is work expanded by a sealed turboexpander/loader to generate refrigeration which is used to cool heat transfer fluid for provision to the use point.
    Type: Grant
    Filed: December 20, 2001
    Date of Patent: February 25, 2003
    Assignee: Praxair Technology, Inc.
    Inventors: Dante Patrick Bonaquist, Jalal Zia, Nancy Jean Lynch, Michael John Stanko
  • Thermo-siphon method for providing refrigeration to a refrigeration load
    Patent number: 6477847
    Abstract: A method wherein refrigeration is generated, preferably using a pulse tube cryocooler or refrigerator, to produce cold working gas which is used to liquefy coupling fluid circulating between a coupling fluid liquid reservoir and a refrigeration load, such as superconductivity equipment, using thermo-siphon effects.
    Type: Grant
    Filed: March 28, 2002
    Date of Patent: November 12, 2002
    Assignee: Praxair Technology, Inc.
    Inventors: Dante Patrick Bonaquist, John Fredric Billingham, Jalal Zia, Nancy Jean Lynch, Bayram Arman
  • Cryogenic pulse tube system
    Patent number: 6374617
    Abstract: A pulse tube system especially useful for producing and delivering refrigeration at very cold temperatures wherein a product fluid such as hydrogen is preferably precooled and then liquefied, subcooled and/or densified by heat exchange with ultra cold gas generated by a pulsing compression wave which rejects heat into a cryogen fluid heat sink.
    Type: Grant
    Filed: January 19, 2001
    Date of Patent: April 23, 2002
    Assignee: Praxair Technology, Inc.
    Inventors: Dante Patrick Bonaquist, Bayram Arman, Nancy Jean Lynch, Arun Acharya
  • 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 high ratio turboexpansion
    Patent number: 6000239
    Abstract: A cryogenic air separation system wherein a portion of the feed air is compressed to a very high pressure, bypasses the primary heat exchanger, and is turboexpanded to a low pressure to supply refrigeration in one step from the warm end temperature to the cryogenic temperature of the cryogenic air separation plant.
    Type: Grant
    Filed: July 10, 1998
    Date of Patent: December 14, 1999
    Assignee: Praxair Technology, Inc.
    Inventors: Dante Patrick Bonaquist, Nancy Jean Lynch
  • Cryogenic argon production system with thermally integrated stripping column
    Patent number: 5916261
    Abstract: A cryogenic rectification system for producing argon employing an argon stripping column which receives a feed in its upper portion from an associated cryogenic air separation plant, and which is reboiled by another fluid taken from the cryogenic air separation plant.
    Type: Grant
    Filed: April 2, 1998
    Date of Patent: June 29, 1999
    Assignee: Praxair Technology, Inc.
    Inventors: Dante Patrick Bonaquist, Nancy Jean Lynch, Mark Julian Roberts
  • Serial column cryogenic rectification system for producing high purity nitrogen
    Patent number: 5906113
    Abstract: A serial column system for producing relatively large quantities of both high purity nitrogen gas and high purity nitrogen liquid using a first column producing the high purity gas and a second column producing the high purity liquid, with second column top fluid refluxing the first column.
    Type: Grant
    Filed: April 8, 1998
    Date of Patent: May 25, 1999
    Assignee: Praxair Technology, Inc.
    Inventors: Nancy Jean Lynch, Mark Edward Vincett, Dante Patrick Bonaquist, Kevin John Potempa
  • System for producing cryogenic liquid
    Patent number: 5836173
    Abstract: A system for liquefying low boiling point gases wherein a mixture of feed gas and recirculating refrigerant gas is compressed, a first portion turboexpanded, a second portion compressed to a supercritical pressure, and the supercritical fluid cooled against the turboexpanded fluid to produce cryogenic liquid.
    Type: Grant
    Filed: May 1, 1997
    Date of Patent: November 17, 1998
    Assignee: Praxair Technology, Inc.
    Inventors: Nancy Jean Lynch, Dante Patrick Bonaquist, Paul Arthur Henry
  • 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
  • Cryogenic rectification system for producing low purity oxygen and high purity oxygen
    Patent number: 5806342
    Abstract: A cryogenic rectification system for producing low purity oxygen and high purity oxygen employing an offset dual column with bottom reboil of the lower pressure column effected by condensing feed air, with intermediate reboil of the lower pressure column effected by condensing higher pressure column top vapor, and with waste nitrogen turboexpansion to generate refrigeration.
    Type: Grant
    Filed: October 15, 1997
    Date of Patent: September 15, 1998
    Assignee: Praxair Technology, Inc.
    Inventors: Dante Patrick Bonaquist, Nancy Jean Lynch, Susan Marie Sattan, James Richard Handley
  • Cryogenic rectification system for producing lower purity oxygen and higher purity oxygen
    Patent number: 5682766
    Abstract: A cryogenic rectification system having high recovery of both higher purity and lower purity oxygen which employs a side column having a bottom reboiler wherein feed air is partially condensed and the feed air vapor remaining after the partial condensation is turboexpanded prior to rectification.
    Type: Grant
    Filed: December 12, 1996
    Date of Patent: November 4, 1997
    Assignee: Praxair Technology, Inc.
    Inventors: Dante Patrick Bonaquist, Nancy Jean Lynch
  • Cryogenic rectification system for producing argon and lower purity oxygen
    Patent number: 5682765
    Abstract: A cryogenic rectification system wherein additional stripping vapor for the lower pressure column of a double column is produced from higher pressure column bottoms and feed for the argon column is taken from the upper portion of the lower pressure column and first processed through a stripping column. Lower purity oxygen is recovered either directly from the lower pressure column or after first being processed in an auxiliary column which additionally produces higher purity oxygen.
    Type: Grant
    Filed: December 12, 1996
    Date of Patent: November 4, 1997
    Assignee: Praxair Technology, Inc.
    Inventors: Nancy Jean Lynch, Dante Patrick Bonaquist