Patents by Inventor Thomas Neu
Thomas Neu 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).
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Publication number: 20180128092Abstract: A method, system, and apparatus required for creating a mixture of dry proppant and liquid carbon dioxide (LCO2) for fracturing oil and gas formations is presented. The operation includes making a mixture of dry proppant and liquid carbon dioxide (LCO2) for use in a fracturing operation by supplying dry proppant that is pressurized to between 75 and 600 psia with a gas; further supplying a stream of sub-cooled LCO2 having a pressure substantially equal to that of the pressurized dry proppant; and adding dry, pressurized proppant to the stream of sub-cooled LCO2, thereby forming a mixed LCO2 and proppant fracturing slurry.Type: ApplicationFiled: January 3, 2018Publication date: May 10, 2018Inventors: Richard M. Kelly, Nick Joseph Degenstein, Bernard Thomas Neu
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Patent number: 9896922Abstract: A method, system, and apparatus required for creating a mixture of dry proppant and liquid carbon dioxide (LCO2) for fracturing oil and gas formations is presented. The operation includes making a mixture of dry proppant and liquid carbon dioxide (LCO2) for use in a fracturing operation by supplying dry proppant that is pressurized to between 75 and 600 psia with a gas; further supplying a stream of sub-cooled LCO2 having a pressure substantially equal to that of the pressurized dry proppant; and adding dry, pressurized proppant to the stream of sub-cooled LCO2, thereby forming a mixed LCO2 and proppant fracturing slurry.Type: GrantFiled: December 21, 2012Date of Patent: February 20, 2018Assignee: PRAXAIR TECHNOLOGY, INC.Inventors: Richard M. Kelly, Nick Joseph Degenstein, Bernard Thomas Neu
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Patent number: 9001712Abstract: Apparatus and methods disclosed herein implement an RF receive-band filter at a receive chain input of a wireless base station with a co-located transmitter and receiver. The RF receive-band filter includes an adaptive filter component to perform filtering operations on samples of a digital baseband or intermediate frequency signal x(n) from a transmit chain associated with the wireless base station. An adaptive filter transfer function is determined in real time such that samples of the baseband transmit signal x(n) are transformed into a cancellation baseband signal z(n). The digital cancelation baseband signal z(n) is then digital-to-analog converted and the resulting analog baseband signal z(t) is up-converted to obtain a subtractive RF cancelation signal c(t). C(t) is summed with a desirable received signal RF component r(t) and an undesirable transmitter leakage RF signal component l(t) appearing at the input to the base station receiver.Type: GrantFiled: April 27, 2013Date of Patent: April 7, 2015Assignee: Texas Instruments IncorporatedInventors: Nagarajan Viswanathan, Visvesvaraya Pentakota, Robert Clair Keller, Thomas Neu, Francesco Dantoni
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Publication number: 20140174747Abstract: A method, system, and apparatus required for creating a mixture of dry proppant and liquid carbon dioxide (LCO2) for fracturing oil and gas formations is presented. The operation includes making a mixture of dry proppant and liquid carbon dioxide (LCO2) for use in a fracturing operation by supplying dry proppant that is pressurized to between 75 and 600 psia with a gas; further supplying a stream of sub-cooled LCO2 having a pressure substantially equal to that of the pressurized dry proppant; and adding dry, pressurized proppant to the stream of sub-cooled LCO2, thereby forming a mixed LCO2 and proppant fracturing slurry.Type: ApplicationFiled: December 21, 2012Publication date: June 26, 2014Inventors: Richard M. Kelly, Nick Joseph Degenstein, Bernard Thomas Neu
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Publication number: 20130294295Abstract: Apparatus and methods disclosed herein implement an RF receive-band filter at a receive chain input of a wireless base station with a co-located transmitter and receiver. The RF receive-band filter includes an adaptive filter component to perform filtering operations on samples of a digital baseband or intermediate frequency signal x(n) from a transmit chain associated with the wireless base station. An adaptive filter transfer function is determined in real time such that samples of the baseband transmit signal x(n) are transformed into a cancellation baseband signal z(n). The digital cancelation baseband signal z(n) is then digital-to-analog converted and the resulting analog baseband signal z(t) is up-converted to obtain a subtractive RF cancelation signal c(t). C(t) is summed with a desirable received signal RF component r(t) and an undesirable transmitter leakage RF signal component l(t) appearing at the input to the base station receiver.Type: ApplicationFiled: April 27, 2013Publication date: November 7, 2013Applicant: TEXAS INSTRUMENTS INCORPORATEDInventors: Nagarajan Viswanathan, Visvesvaraya Pentakota, Robert Clair Keller, Thomas Neu, Francesco Dantoni
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Patent number: 8282715Abstract: Carbon dioxide-containing feed stream such as flue gas is treated to produce a high-purity carbon dioxide stream by a series of steps including removing SOx and NOx with activated carbon, carrying out subambient-temperature processing to produce a product stream and a vent stream, and treating the vent stream by pressure swing adsorption or by physical or chemical absorption to produce a product stream which is recycled to the feed stream.Type: GrantFiled: June 5, 2012Date of Patent: October 9, 2012Assignee: Praxair Technology, Inc.Inventors: Nick Joseph Degenstein, Minish Mahendra Shah, Bernard Thomas Neu
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Publication number: 20120251404Abstract: Carbon dioxide-containing feed stream such as flue gas is treated to produce a high-purity carbon dioxide stream by a series of steps including removing SOx and NOx with activated carbon, carrying out subambient-temperature processing to produce a product stream and a vent stream, and treating the vent stream by pressure swing adsorption or by physical or chemical absorption to produce a product stream which is recycled to the feed stream.Type: ApplicationFiled: June 5, 2012Publication date: October 4, 2012Inventors: Nick Joseph Degenstein, Minish Mahendra Shah, Bernard Thomas Neu
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Patent number: 8216344Abstract: Carbon dioxide-containing feed stream such as flue gas is treated to produce a high-purity carbon dioxide stream by a series of steps including removing SOx and NOx with activated carbon, carrying out subambient-temperature processing to produce a product stream and a vent stream, and treating the vent stream by pressure swing adsorption or by physical or chemical absorption to produce a product stream which is recycled to the feed stream.Type: GrantFiled: September 22, 2009Date of Patent: July 10, 2012Assignee: Praxair Technology, Inc.Inventors: Nick Joseph Degenstein, Minish Mahendra Shah, Bernard Thomas Neu
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Patent number: 8042357Abstract: The present invention provides a method of liquefying a hydrogen feed stream and a liquefier for carrying out such a method in which ortho-species of hydrogen contained in a hydrogen feed stream is converted to the para-species in higher and lower temperature catalytic converters. An adsorption unit, located between the higher and lower temperature catalytic converters, adsorbs a portion of the ortho content of the feed stream. The adsorbed portion is desorbed during regeneration of an adsorbent bed of the adsorption unit and is recirculated back for treatment in the higher temperature catalytic converter to reduce the degree to which the ortho-species are converted to the para-species in the lower temperature catalytic converter and at lower temperatures.Type: GrantFiled: April 23, 2009Date of Patent: October 25, 2011Assignee: Praxair Technology, Inc.Inventors: Joseph Michael Schwartz, Raymond Francis Drnevich, Philip Alexander Barrett, Bernard Thomas Neu
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Patent number: 7871457Abstract: A method of producing a carbon dioxide product stream from a synthesis gas stream formed within a hydrogen plant having a synthesis gas reactor, a water-gas shift reactor, located downstream of the synthesis gas reactor to form the synthesis gas stream and a hydrogen pressure swing adsorption unit to produce a hydrogen product recovered from the synthesis gas stream. In accordance with the method the carbon dioxide from the synthesis gas stream by separating the carbon dioxide from the synthesis gas stream in a vacuum pressure swing adsorption system, thereby to produce a hydrogen-rich synthesis gas stream and a crude carbon dioxide stream and then purifying the crude carbon dioxide stream by a sub-ambient temperature distillation process thereby to produce the carbon dioxide product. A hydrogen synthesis gas feed stream to the hydrogen pressure swing adsorption unit is formed at least in part from the hydrogen rich stream.Type: GrantFiled: April 3, 2006Date of Patent: January 18, 2011Assignee: Praxair Technology, Inc.Inventors: Minish Mahendra Shah, Ravi Kumar, Henry Edward Howard, Bernard Thomas Neu, Dante Patrick Bonaquist, John Fredric Billingham
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Publication number: 20100272634Abstract: The present invention provides a method of liquefying a hydrogen feed stream and a liquefier for carrying out such a method in which ortho-species of hydrogen contained in a hydrogen feed stream is converted to the para-species in higher and lower temperature catalytic converters. An adsorption unit, located between the higher and lower temperature catalytic converters, adsorbs a portion of the ortho content of the feed stream. The adsorbed portion is desorbed during regeneration of an adsorbent bed of the adsorption unit and is recirculated back for treatment in the higher temperature catalytic converter to reduce the degree to which the ortho-species are converted to the para-species in the lower temperature catalytic converter and at lower temperatures.Type: ApplicationFiled: April 23, 2009Publication date: October 28, 2010Inventors: Joseph Michael Schwartz, Raymond Francis Drnevich, Philip Alexander Barrett, Bernard Thomas Neu
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Publication number: 20100083697Abstract: Carbon dioxide-containing feed stream such as flue gas is treated to produce a high-purity carbon dioxide stream by a series of steps including removing SOx and NOx with activated carbon, carrying out subambient-temperature processing to produce a product stream and a vent stream, and treating the vent stream by pressure swing adsorption or by physical or chemical absorption to produce a product stream which is recycled to the feed stream.Type: ApplicationFiled: September 22, 2009Publication date: April 8, 2010Inventors: Nick Joseph Degenstein, Minish Mahendra Shah, Bernard Thomas Neu
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Patent number: 7294172Abstract: A gas recovery system comprising a source of gas having a preselected concentration of a desired component (9), at least one application (1) that adds impurities to said gas, and at least one an adsorption system (6) that purifies said gas to produce a purified gas for re-use in application (1), wherein said at least one adsorption system includes at least one adsorbent bed (A) having at least three layers of adsorbents. A recovery process is also disclosed.Type: GrantFiled: July 31, 2002Date of Patent: November 13, 2007Assignee: Praxair Technology, Inc.Inventors: Mohamed Safdar Allie Baksh, Scot Eric Jaynes, Bernard Thomas Neu, James Smolarek, Mark Thomas Emley
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Patent number: 7276107Abstract: The present invention relates to a PSA system using an indexing rotary dual valve regulating a stepping mode of operation that controls a variable bed inlet feed flow rate, controllable pressure between feed lines in different beds of the PSA system and varied output flow rate of product gas such as high purity hydrogen gas.Type: GrantFiled: December 23, 2003Date of Patent: October 2, 2007Assignee: Praxair Technology, Inc.Inventors: Mohamed Safdar Allie Baksh, Michael S. Manning, Andrew C. Rosinski, James Smolarek, Alan Barnard Stewart, Bernard Thomas Neu
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Publication number: 20070089796Abstract: The present invention relates to systems to supply medical grade air in which critical flow conditions for delivering oxygen and nitrogen to a system are provided. The ratio of pressure downstream of the orifices to the pressure upstream of orifices for the oxygen and nitrogen is maintained near or below critical pressure ratio.Type: ApplicationFiled: October 26, 2005Publication date: April 26, 2007Inventors: Tamara Electra Brown, Bradley Hagstrom, Bernard Thomas Neu, Friedrich Eduard Purkert, M. Ahmed
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Patent number: 7169210Abstract: The present invention relates to a gas recycling system that includes a) a source of gas having a predetermined purity; b) an application system that uses the gas and adds contaminants to the gas; c) an adsorption system for removing the contaminants from the gas to produce a purified gas and a waste gas; d) a gas purity analyzer for measuring the amount of the contaminants in the waste gas; and e) conduits connecting the gas source to the application system, and the application system to the adsorption system.Type: GrantFiled: July 31, 2002Date of Patent: January 30, 2007Assignee: Praxair Technology, Inc.Inventors: Mohamed Safdar Allie Baksh, Scot Eric Jaynes, Bernard Thomas Neu, James Smolarek, Mark Thomas Emley
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Patent number: 7166151Abstract: The present invention is a PSA system having at least one vessel that uses a multi-segmented flow distributor to provide a uniform fluid across the adsorbent bed in the vessel.Type: GrantFiled: January 15, 2004Date of Patent: January 23, 2007Assignee: Praxair Technology, Inc.Inventors: Mohamed Safdar Allie Baksh, Bernard Thomas Neu, Dariush H. Zadeh
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Publication number: 20040237789Abstract: A gas recovery system comprising a source of gas having a preselected concentration of a desired component (9), at least one application (1) that adds impurities to said gas, and at least one an adsorption system (6) that purifies said gas to produce a purified gas for re-use in application (1), wherein said at least one adsorption system includes at least one adsorbent bed (A) having at least three layers of adsorbents. A recovery process is also disclosed.Type: ApplicationFiled: January 27, 2004Publication date: December 2, 2004Inventors: Mohamed Safdar Allie Baksh, Scot Eric Jaynes, Bernard Thomas Neu, James Smolarek, Mark Thomas Emley
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Publication number: 20040216609Abstract: The invention comprises a gas recycling system comprising: a) a source of gas having a predetermined purity (28); b) an application system (6) that uses said gas and adds contaminants to said gas; c) an adsorption system (1) for removing said contaminants from said gas to produce a purified gas, and a waste gas; d) a gas purity analyzer (100) for measuring the amount of said contaminants in said waste gas; e) conduits ((5), (8), (9) (13) and (15) connecting the gas source (4) to said application system, said application system (6) to said adsorption system.Type: ApplicationFiled: June 23, 2004Publication date: November 4, 2004Inventors: Mohamed Safdar Allie Baksh, Scot Eric Jaynes, Bernard Thomas Neu, James Smolarek, Mark Thomas Emley
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Patent number: 6770120Abstract: An apparatus includes a vessel and a radial adsorption bed within the vessel and either an axial adsorption bed for a storage tank within the inner diameter of the radial adsorption bed. In one example, the radial adsorption bed surrounds an axial adsorption bed. A process that can be conducted in the vessel includes directing a gas mixture across the radial adsorption bed, thereby causing adsorption of at least a portion of a gas component present in the gas mixture and producing partially purified product. The partially purified gas is directed through the axial adsorption bed, thereby causing further purification of the partially purified gas and producing product gas. In another example, the radial adsorption bed surrounds a storage tank. The storage tank can be employed to store a gas generated or used in a separation process conducted in the radial adsorption bed. For instance, the storage tank can be employed to store product gas or void gas generated in a vacuum/pressure swing adsorption process.Type: GrantFiled: May 1, 2002Date of Patent: August 3, 2004Assignee: Praxair Technology, Inc.Inventors: Bernard Thomas Neu, James Smolarek, Mark Thomas Emley