Patents Represented by Attorney, Agent or Law Firm Stanley Ktorides
  • Reagent delivery system
    Patent number: 6254379
    Abstract: A method for providing reagent to a remote reaction zone wherein reagent preferably is mixed with carrier gas and maintained within the carrier gas as it is passed as a coherent jet through a distance to the reaction zone. The jet passes the leading edge of a confining flame envelope, loses its coherency and delivers the reagent to the reaction zone for reaction therein.
    Type: Grant
    Filed: September 27, 2000
    Date of Patent: July 3, 2001
    Assignee: Praxair Technology, Inc.
    Inventors: Lawrence E. Bool, III, Hisashi Kobayashi
  • 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
  • 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
  • System for providing proximate turbulent and coherent gas jets
    Patent number: 6241510
    Abstract: A system for providing gases into an injection volume in one or more coherent gas jets proximate to one or more turbulent gas jets wherein a coherent gas jet is formed in a forming volume with a flame envelope prior to passage into the injection volume into which the turbulent gas jets are directly passed.
    Type: Grant
    Filed: February 2, 2000
    Date of Patent: June 5, 2001
    Assignee: Praxair Technology, Inc.
    Inventors: John Erling Anderson, Balu Sarma, Ronald Joseph Selines, Pravin Chandra Mathur
  • 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
  • Cylinder valve assembly
    Patent number: 6230737
    Abstract: A cylinder valve assembly having a check valve in a sealing assembly attached to a cylinder, and a detachable dispensing valve matingly fitted with the sealing assembly which actuates the check valve when seated.
    Type: Grant
    Filed: October 9, 1997
    Date of Patent: May 15, 2001
    Assignee: Praxair Technology, Inc.
    Inventors: John Notaro, Thomas Edward Debriae
  • 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 industrial gas liquefaction system
    Patent number: 6220053
    Abstract: A system for liquefying industrial gas wherein industrial gas is compressed to two levels using a first and a second compression system and then is processed in a heat exchanger having horizontally oriented sensible heat exchange passages and vertically oriented condensing heat exchange passages.
    Type: Grant
    Filed: January 10, 2000
    Date of Patent: April 24, 2001
    Assignee: Praxair Technology, Inc.
    Inventors: Joseph William Hass, Jr., Herbert Raymond Schaub, Michael Anthony Marino, Bayram Arman
  • 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
  • Method for operating a cryogenic rectification column
    Patent number: 6212907
    Abstract: A method for operating a cryogenic rectification column for the separation of the components of air by cryogenic rectification, whereby the column may be operated above its design capacity without encountering flooding, by passing vapor upward through the column at a flowrate which generates a pressure drop within the column of at least 0.7 inches of water per foot of packing height through a height of defined structured packing sheets having a structure in their bottom portion which differs from the structure in their middle portion and is the same as the structure in their top portion.
    Type: Grant
    Filed: February 23, 2000
    Date of Patent: April 10, 2001
    Assignee: Praxair Technology, Inc.
    Inventors: John Fredric Billingham, Daniel Mark Seiler, Michael James Lockett
  • Carbon dioxide cleaning system with improved recovery
    Patent number: 6210467
    Abstract: A system for cleaning a carbon dioxide gas stream of water soluble contaminants with improved recovery of carbon dioxide wherein the water soluble contaminants are removed into countercurrently flowing water which undergoes at least one pressure reduction step releasing absorbed carbon dioxide for recapture and recycle into the carbon dioxide gas stream.
    Type: Grant
    Filed: May 7, 1999
    Date of Patent: April 3, 2001
    Assignee: Praxair Technology, Inc.
    Inventor: Henry Edward Howard
  • NOx reduction using coal based reburning
    Patent number: 6206949
    Abstract: A method for reducing the NOx content of combustion gases from combustion in a commercial furnace wherein hot oxygen and carbonaceous fuel such as pulverized coal react to form a fuel-rich gas phase mixture which is then used to reduce NOx to nitrogen gas.
    Type: Grant
    Filed: May 19, 2000
    Date of Patent: March 27, 2001
    Assignee: Praxair Technology, Inc.
    Inventors: Hisashi Kobayashi, Lawrence E. Bool, III, Michael Francis Riley
  • 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 system for producing enriched air
    Patent number: 6192707
    Abstract: A system for producing enriched air wherein a multistage compressor is integrated with a cryogenic air separation plant and serves to compress feed air for the plant while also compressing both air and oxygen fluid from the plant to produce the enriched air.
    Type: Grant
    Filed: November 12, 1999
    Date of Patent: February 27, 2001
    Assignee: Praxair Technology, Inc.
    Inventors: Minish Mahendra Shah, Raymond Francis Drnevich
  • Cryogenic rectification system for producing oxygen product at a non-constant rate
    Patent number: 6182471
    Abstract: A cryogenic air separation system wherein product oxygen may be produced effectively at a higher production rate and at a lower production rate than the nominal production rate by employing a liquid oxygen storage tank and, in addition, an oxygen-enriched liquid storage tank operating in conjunction with the higher pressure column sump.
    Type: Grant
    Filed: June 28, 1999
    Date of Patent: February 6, 2001
    Assignee: Praxair Technology, Inc.
    Inventor: James Patrick Meagher
  • 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
  • Method for providing refrigeration
    Patent number: 6176102
    Abstract: A method for providing refrigeration such as to an insulated enclosure wherein a defined 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: December 30, 1998
    Date of Patent: January 23, 2001
    Assignee: Praxair Technology, Inc.
    Inventors: Richard A. Novak, Gary D. Lang, Arun Acharya, John Henri Royal, Mohammad Abdul-Aziz Rashad
  • Supersonic coherent gas jet for providing gas into a liquid
    Patent number: 6176894
    Abstract: A system for establishing and maintaining a supersonic coherent gas jet, effective with either an oxidizing or an inert gas, employing a converging/diverging nozzle for establishment of a non-disruptive initial supersonic velocity, and a slower moving defined triple layered flame envelope coaxial with the jet for effective maintenance of the supersonic velocity. The invention is particularly useful for providing gas into a pool of liquid.
    Type: Grant
    Filed: June 17, 1998
    Date of Patent: January 23, 2001
    Assignee: Praxair Technology, Inc.
    Inventors: John Erling Anderson, Pravin Chandra Mathur
  • 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
  • Carbon dioxide recovery from an oxygen containing mixture
    Patent number: 6174506
    Abstract: A process for recovering carbon dioxide from a gas containing both carbon dioxide and oxygen wherein a carbon dioxide and oxygen containing gas is first contacted with an alkanolamine solution to produce an alkanolamine loaded with carbon dioxide and oxygen, the oxygen is separated from the absorption solution, such as by stripping with a scavenging gas, such as the carbon dioxide containing fluid obtained from the separation of carbon dioxide from the alkanolamine solution or nitrogen, prior to any heating of the absorption solution, and carbon dioxide is steam stripped from the absorption solution and recovered. By stripping the oxygen out of the alkanolamine solution, oxidative degradation of the alkanolamine can be reduced.
    Type: Grant
    Filed: June 10, 1999
    Date of Patent: January 16, 2001
    Assignee: Praxair Technology, Inc.
    Inventors: Shrikar Chakravarti, Amitabh Gupta