Patents by Inventor Steven Wallace

Steven Wallace 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).

  • Publication number: 20090211155
    Abstract: Methods and systems for a gasifier system are provided. The gasifier system includes a gasifier including a syngas cooler configured to transfer heat from a reaction zone of the gasifier to a flow of fluid through the syngas cooler, a reaction vessel coupled in flow communication with the syngas cooler wherein the reaction vessel is adapted to receive the flow of fluid and generate heat in an exothermic shift reaction. The system also includes a heat exchanger coupled in flow communication with the reaction vessel, the heat exchanger adapted to produce relatively high pressure steam using the generated heat.
    Type: Application
    Filed: February 21, 2008
    Publication date: August 27, 2009
    Inventors: Aaron John Avagliano, Paul Steven Wallace
  • Patent number: 7575612
    Abstract: Methods and systems for decomposing ammonia in a gasifier are provided. The system includes a gasifier including a pressure vessel and an injection nozzle extending through the pressure vessel and including a nozzle tip at a distal end of the injection nozzle, the injection nozzle further includes a passage configured to direct a fluid stream including ammonia proximate the nozzle tip such that the fluid stream including ammonia facilitates reducing a temperature of at least a portion of the nozzle tip.
    Type: Grant
    Filed: October 31, 2005
    Date of Patent: August 18, 2009
    Assignee: General Electric Company
    Inventor: Paul Steven Wallace
  • Publication number: 20090173081
    Abstract: A method of producing substitute natural gas (SNG) includes providing a syngas stream that includes at least some carbon dioxide (CO2) and hydrogen sulfide (H2S). The method also includes separating at least a portion of the CO2 and at least a portion of the H2S from at least a portion of the syngas stream provided. The method further includes channeling at least a portion of the CO2 and at least a portion of the H2S separated from at least a portion of the syngas stream to at least one of a sequestration system and a gasification reactor.
    Type: Application
    Filed: January 7, 2008
    Publication date: July 9, 2009
    Inventors: Paul Steven Wallace, Arnaldo Frydman
  • Publication number: 20090173080
    Abstract: A method of producing substitute natural gas (SNG) includes providing a syngas stream that includes at least some carbon dioxide (CO2). The method also includes separating at least a portion of the CO2 from at least a portion of the syngas stream provided. The method further includes channeling at least a portion of the CO2 separated from at least a portion of the syngas stream to at least a portion of at least one gasification reactor.
    Type: Application
    Filed: January 7, 2008
    Publication date: July 9, 2009
    Inventors: Paul Steven Wallace, Arnaldo Frydman
  • Publication number: 20090173079
    Abstract: A method of producing substitute natural gas (SNG) includes providing at least one steam turbine engine. The method also includes providing a gasification system that includes at least one gas shift reactor configured to receive a boiler feedwater stream and a synthesis gas (syngas) stream. The at least one gas shift reactor is further configured to produce a high pressure steam stream. The method further includes producing a steam stream within the at least one gas shift reactor and channeling at least a portion of the steam stream to the at least one steam turbine engine.
    Type: Application
    Filed: January 7, 2008
    Publication date: July 9, 2009
    Inventors: Paul Steven Wallace, Arnaldo Frydman
  • Publication number: 20090158701
    Abstract: A power generation system includes at least one turbine system comprising a compressor section configured to supply a first portion and a second portion of compressed oxidant and an oxidant booster to further boost pressure of the first portion of compressed oxidant to generate a high pressure oxidant. The power generation system further includes a partial oxidation unit configured to receive the high pressure oxidant and a compressed fuel to generate a high pressure fuel stream and a CO2 separation system fluidly coupled to the partial oxidation unit for receiving the high pressure fuel stream and provide a CO2 lean fuel stream. A syngas expander is configured to receive the CO2 lean fuel stream to utilize the energy content in the CO2 lean fuel stream to generate a partially expanded fuel stream and a combustion chamber is configured to combust the second portion of compressed oxidant and the partially expanded fuel stream to generate a hot flue gas.
    Type: Application
    Filed: December 20, 2007
    Publication date: June 25, 2009
    Applicant: GENERAL ELECTRIC COMPANY
    Inventors: Stephanie Marie-Noelle Hoffmann, Michael Adam Bartlett, Paul Steven Wallace
  • Publication number: 20090120290
    Abstract: Disclosed is a process for removing coarse solids and fine solids from a gas, which includes wetting the coarse solids and fine solids in a first chamber thereby separating the coarse solids and fine solids from the gas. The first chamber also contains liquid to cool the coarse solids and the fine solids. The coarse solids and fine solids are routed to a liquid-filled second chamber where the coarse solids settle to the bottom. The liquid in the second chamber, still containing the fine solids is flushed into a third chamber where the fine solids are separated from the liquid. The separated fine solids and coarse solids are then routed to a fourth chamber.
    Type: Application
    Filed: November 12, 2007
    Publication date: May 14, 2009
    Applicant: GENERAL ELECTRIC COMPANY
    Inventors: Paul Steven Wallace, Jyung-Hoon Kim
  • Patent number: 7518266
    Abstract: An electric power transmission system that isolates a local AC transmission network from a surrounding AC system includes a local AC load center having a plurality of local AC loads, and a distribution feeder serving the plurality of local AC loads and at least one distant electric power generating station or other power source for supplying AC power to the local AC load center. A complete or partial DC transmission ring is interposed between the local AC load center and the distant electric power generating station for isolating the AC power received from the distant electric power generating station from the local AC load center by converting the AC power to DC power. The DC power is re-converted into AC power based on load requirements and the distribution feeder supplies the AC power while all local AC loads are isolated from the distant electric power generating station.
    Type: Grant
    Filed: November 1, 2006
    Date of Patent: April 14, 2009
    Assignee: Electric Power Research Institute, Inc.
    Inventor: Steven Wallace Eckroad
  • Publication number: 20090054106
    Abstract: An apparatus including an array of directional antenna elements is provided. The apparatus is configured to identify an angular relationship between a transmitting device and the apparatus by sampling data from antenna elements and analyzing reception patterns relating to antenna elements.
    Type: Application
    Filed: April 5, 2007
    Publication date: February 26, 2009
    Inventors: Danko Antolovic, Steven Wallace
  • Publication number: 20080175770
    Abstract: A method of cooling syngas in a gasifier is provided. The method includes channeling cooling fluid through at least one platen that extends at least partially through a reaction zone of the gasifier, and circulating reactant fluid around the at least one platen to facilitate heat transfer from the reactant fluid to the cooling fluid.
    Type: Application
    Filed: January 19, 2007
    Publication date: July 24, 2008
    Inventor: Paul Steven Wallace
  • Publication number: 20080103630
    Abstract: An electric power transmission system that isolates a local AC transmission network from a surrounding AC system includes a local AC load center having a plurality of local AC loads, and a distribution feeder serving the plurality of local AC loads and at least one distant electric power generating station or other power source for supplying AC power to the local AC load center. A complete or partial DC transmission ring is interposed between the local AC load center and the distant electric power generating station for isolating the AC power received from the distant electric power generating station from the local AC load center by converting the AC power to DC power. The DC power is re-converted into AC power based on load requirements and the distribution feeder supplies the AC power while all local AC loads are isolated from the distant electric power generating station.
    Type: Application
    Filed: November 1, 2006
    Publication date: May 1, 2008
    Applicant: ELECTRIC POWER RESEARCH INSTITUTE, INC.
    Inventor: Steven Wallace Eckroad
  • Publication number: 20060233206
    Abstract: A periodically poled second harmonic generating crystal having a long axis, said crystal comprising Magnesium Oxide doped Congruent Lithium Niobate, Magnesium Oxide doped Stoichiometric Lithium Niobate, Stoichiometric Lithium Tantalate or Potassium Titanyl Phosphate wherein the poling planes of said periodically poled crystal are canted relative to said axis and a doubled, external cavity laser utilizing said crystal, comprising an external cavity pump laser section and an extra-cavity frequency doubling section.
    Type: Application
    Filed: April 15, 2005
    Publication date: October 19, 2006
    Inventors: Carla Miner, Sherri Sparling, Barbara Paldus, Steven Wallace, Bruce Richman, Chris Rella, Guido Knippels
  • Publication number: 20060203373
    Abstract: A magnetic tape cartridge, a recording system, and a magnetic tape drive are configured to, for example, guard against tampering with a write once overwrite protection pointer which allows a rewritable magnetic tape to be treated as write once. In one embodiment, the magnetic tape cartridge comprises a magnetic tape and a cartridge memory. The magnetic tape is configured to provide at least one overwrite protection pointer, the overwrite protection pointer identifying data to be protected from being overwritten; and the cartridge memory is configured to provide the at least one overwrite protection pointer, the overwrite protection pointer identifying magnetic tape data to be protected from being overwritten.
    Type: Application
    Filed: March 10, 2005
    Publication date: September 14, 2006
    Inventors: Kirby Dahman, Paul Greco, Glen Jaquette, Steven Wallace
  • Publication number: 20060054863
    Abstract: Applicant's present invention is a composite scintillator having enhanced transparency for detecting ionizing radiation comprising a material having optical transparency wherein said material comprises nano-sized objects having a size in at least one dimension that is less than the wavelength of light emitted by the composite scintillator wherein the composite scintillator is designed to have selected properties suitable for a particular application.
    Type: Application
    Filed: September 14, 2004
    Publication date: March 16, 2006
    Inventors: Sheng Dai, Andrew Stephan, Suree Brown, Steven Wallace, Adam Rondinone
  • Publication number: 20050204178
    Abstract: A method for controlling power consumption associated with a processor in which, depending on the respective embodiment, a relative amount of idle time, activity time, or idle time and activity time associated with the processor are measured or detected, results of the measuring being used by the processor for controlling a clock speed.
    Type: Application
    Filed: May 6, 2005
    Publication date: September 15, 2005
    Inventors: LaVaughn Watts, Steven Wallace
  • Publication number: 20050204179
    Abstract: A method for controlling power consumption associated with a processor in which, depending on the respective embodiment, a relative amount of idle time, activity time, or idle time and activity time associated with the processor are measured or detected, results of the measuring being used by the processor for controlling a clock speed.
    Type: Application
    Filed: May 6, 2005
    Publication date: September 15, 2005
    Inventors: LaVauchn Watts, Steven Wallace
  • Publication number: 20050204177
    Abstract: A method for providing power conservation in a processor in which, depending on the respective embodiment, a relative amount of idle time, activity time, or idle time and activity time associated with the processor are measured or detected, results of the measuring being used by the processor for controlling a clock speed. Yet other embodiments disclose, depending upon the respective embodiment, a relative amount of Input/Output (I/O), relative importance of Input/Output (I/O), and/or relative amount of time between Input/Output (I/O), associated with the processor are measured, results of the measuring being used by the processor to control power dissipation associated with the processor.
    Type: Application
    Filed: May 3, 2005
    Publication date: September 15, 2005
    Inventors: Lavaughn Watts, Steven Wallace
  • Publication number: 20050198543
    Abstract: A processor, comprising a monitor for, depending on the respective embodiment, measuring a relative amount of idle time, activity time, or idle time and activity time associated with the processor, results of the measuring being used by the processor for controlling a clock speed. Yet other embodiments disclose, depending upon the respective embodiment, a processor, comprising a monitor for measuring the relative amount of Input/Output (I/O), relative importance of Input/Output (I/O), and/or relative amount of time between Input/Output (I/O), associated with the processor, results of the measuring being used by the processor to control power dissipation associated with the processor.
    Type: Application
    Filed: May 3, 2005
    Publication date: September 8, 2005
    Inventors: LaVaughn Watts, Steven Wallace
  • Publication number: 20050135535
    Abstract: A neutron detector composed of a matrix of scintillating particles imbedded in a lithiated glass is disclosed. The neutron detector detects the neutrons by absorbing the neutron in the 6Li isotope which has been enriched from the natural isotopic ratio to a commercial ninety five percent. The utility of the detector is optimized by suitably selecting scintillating particle sizes in the range of the alpha and the triton. Nominal particle sizes are in the range of five to twenty five microns depending upon the specific scintillating particle selected.
    Type: Application
    Filed: June 4, 2004
    Publication date: June 23, 2005
    Applicant: Neutron Sciences, Inc.
    Inventor: Steven Wallace
  • Patent number: 6876711
    Abstract: A neutron detector utilizing a sol-gel absorber incorporating a fissionable material and an activation disk. Preferably utilizing Li-6 and B-10 as fissionable material and Ag-109 as activation disk material for increased sensitivity and better differentiation of thermal versus prompt neutrons and neutrons versus other radiation fragments.
    Type: Grant
    Filed: September 24, 2001
    Date of Patent: April 5, 2005
    Inventors: Steven A. Wallace, Andrew C. Stephan