Patents by Inventor George N. Simopoulos

George N. Simopoulos 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: 20200191926
    Abstract: A lidar unit includes a housing, a laser, a detector, a window, and a target. The housing is configured to define an opening. The laser and the detector are disposed within the housing. The laser is operable to direct (e.g. scan, steer) a beam of light through the opening toward a field-of-view. The detector is operable to detect a reflection of the beam by an object in the field-of-view. The window is disposed within the opening of the housing, and interposed between the object and the arrangement. The beam is projected by the laser and detected by the detector through the window. The target is disposed on the window. The target is configured to reflect the beam towards the detector. Operation of the laser is determined based on the reflection of the beam by the target towards the detector.
    Type: Application
    Filed: December 19, 2018
    Publication date: June 18, 2020
    Inventors: Chenghui F. Hao, Ronald M. Taylor, Roman J. Dietz, Ashwin K. Samarao, George N. Simopoulos
  • Patent number: 9369001
    Abstract: A wireless power receiver configured to control an electrical connection between a capture resonator of a wireless power transfer system and an electrical load, such as a battery pack or electric motor. The circuitry of the wireless power receiver is powered directly by the power output from the capture resonator, automatically powering up the wireless power receiver as soon as the capture resonator begins producing power. The wireless power receiver 16 does not require stand-by power provided by an external source, such as a vehicle battery. Since the wireless power receiver does not require power from an external source, it can initiate charging of a vehicle battery even if the state of charge of the battery in the vehicle is too low to operate the controller.
    Type: Grant
    Filed: May 16, 2013
    Date of Patent: June 14, 2016
    Assignee: Delphi Technologies, Inc.
    Inventors: George N. Simopoulos, Jeffrey A. Ely
  • Publication number: 20140339923
    Abstract: A wireless power receiver configured to control an electrical connection between a capture resonator of a wireless power transfer system and an electrical load, such as a battery pack or electric motor. The circuitry of the wireless power receiver is powered directly by the power output from the capture resonator, automatically powering up the wireless power receiver as soon as the capture resonator begins producing power. The wireless power receiver 16 does not require stand-by power provided by an external source, such as a vehicle battery. Since the wireless power receiver does not require power from an external source, it can initiate charging of a vehicle battery even if the state of charge of the battery in the vehicle is too low to operate the controller.
    Type: Application
    Filed: May 16, 2013
    Publication date: November 20, 2014
    Inventors: GEORGE N. SIMOPOULOS, JEFFREY A. ELY
  • Patent number: 7937935
    Abstract: A system for managing regeneration of a CDPF in a diesel engine. The system determines volatility of the accumulated soot by a weighting/indexing method to select a regeneration control strategy that protects the CDPF from thermal damage. The system determines the mass of wet soot and dry soot accumulated over the previous driving cycle and selects a management strategy to control the rate of temperature increase and the thermal gradient imposed upon the filter. The wet soot percent is an index for setting the regeneration temperature control profile for an allowable total accumulated soot mass as a function of the accumulated wet soot. The method also scales the soot mass regeneration threshold value based upon wet soot accumulation and accumulation rate and provides an indicator of combustibility of the soot accumulation. The method provides a temperature ramp rate, total regeneration time, and exhaust oxygen level required to control regeneration.
    Type: Grant
    Filed: January 28, 2008
    Date of Patent: May 10, 2011
    Assignee: Delphi Technologies, Inc.
    Inventors: John D. Williams, Tanto Sugiarto, George N. Simopoulos
  • Patent number: 7930880
    Abstract: A method for triggering a new regeneration event in a soot-trapping particulates filter disposed in an exhaust gas stream of an internal combustion engine, comprising the steps of determining instantaneous engine speed and engine load; determining instantaneous mass fractions for wet soot and for dry soot in the exhaust gas stream for the instantaneous engine speed and load; determining instantaneous concentrations of wet and dry soot particles in the exhaust gas; determining the rates of accumulation of wet soot and dry soot in the particulates filter; determining the total amounts of wet soot and dry soot accumulated in said soot-trapping device during all engine operation conditions since the latest previous regeneration event; and triggering the new regeneration event when the total amount of wet soot and dry soot exceeds a permissible value.
    Type: Grant
    Filed: January 28, 2008
    Date of Patent: April 26, 2011
    Assignee: Delphi Technologies, Inc.
    Inventors: John D. Williams, Tanto Sugiarto, Thomas M. Harris, George N. Simopoulos
  • Patent number: 7648784
    Abstract: A fuel cell APU system comprising a plurality of fuel cell modules connected in parallel. Each module includes a local controller connected to a master controller that coordinates the modules to achieve a desired power output at any given time. Each module is operated within an output range to maximize efficiency of the system. When load demand on a first module exceeds the desired output range of the module, an additional module is brought online in parallel with the first. As the load increases further, additional modules are brought online in cascade fashion to permit all modules to be operated efficiently. If a module is disabled, it is automatically switched out of service and replaced by a standby module. The master controller keeps track of the total operating time of each module and varies the sequence in which different modules are brought into service to balance deterioration among the modules.
    Type: Grant
    Filed: March 9, 2006
    Date of Patent: January 19, 2010
    Assignee: Delphi Technologies, Inc.
    Inventors: Kaushik Rajashekara, George N. Simopoulos, Michael T. Faville, Elwood W. Wingeier
  • Publication number: 20090305087
    Abstract: A fuel cell APU system comprising a plurality of fuel cell modules connected in parallel. Each module includes a local controller connected to a master controller that coordinates the modules to achieve a desired power output at any given time. Each module is operated within an output range to maximize efficiency of the system. When load demand on a first module exceeds the desired output range of the module, an additional module is brought online in parallel with the first. As the load increases further, additional modules are brought online in cascade fashion to permit all modules to be operated efficiently. If a module is disabled, it is automatically switched out of service and replaced by a standby module. The master controller keeps track of the total operating time of each module and varies the sequence in which different modules are brought into service to balance deterioration among the modules.
    Type: Application
    Filed: March 9, 2006
    Publication date: December 10, 2009
    Inventors: Kaushik Rajashekara, George N. Simopoulos, Michael T. Faville, Elwood W. Wingeier
  • Publication number: 20090188242
    Abstract: A method for triggering a new regeneration event in a soot-trapping particulates filter disposed in an exhaust gas stream of an internal combustion engine, comprising the steps of determining instantaneous engine speed and engine load; determining instantaneous mass fractions for wet soot and for dry soot in the exhaust gas stream for the instantaneous engine speed and load; determining instantaneous concentrations of wet and dry soot particles in the exhaust gas; determining the rates of accumulation of wet soot and dry soot in the particulates filter; determining the total amounts of wet soot and dry soot accumulated in said soot-trapping device during all engine operation conditions since the latest previous regeneration event; and triggering the new regeneration event when the total amount of wet soot and dry soot exceeds a permissible value.
    Type: Application
    Filed: January 28, 2008
    Publication date: July 30, 2009
    Inventors: John D. Williams, Tanto Sugiarto, Thomas M. Harris, George N. Simopoulos
  • Publication number: 20090188243
    Abstract: A system for managing regeneration of a CDPF in a diesel engine. The system determines volatility of the accumulated soot by a weighting/indexing method to select a regeneration control strategy that protects the CDPF from thermal damage. The system determines the mass of wet soot and dry soot accumulated over the previous driving cycle and selects a management strategy to control the rate of temperature increase and the thermal gradient imposed upon the filter. The wet soot percent is an index for setting the regeneration temperature control profile for an allowable total accumulated soot mass as a function of the accumulated wet soot. The method also scales the soot mass regeneration threshold value based upon wet soot accumulation and accumulation rate and provides an indicator of combustibility of the soot accumulation. The method provides a temperature ramp rate, total regeneration time, and exhaust oxygen level required to control regeneration.
    Type: Application
    Filed: January 28, 2008
    Publication date: July 30, 2009
    Inventors: John D. Williams, Tanto Sugiarto, George N. Simopoulos
  • Patent number: 5094185
    Abstract: Electroluminescent phosphors, electroluminescent panels and lamps made with such phosphors, and a process and apparatus for treating phosphors are disclosed in which the phosphor particles are coated with a very thin coating of SiO.sub.2, to protect the phosphor particles from aging due to moisture intrusion. The phosphor particles are coated in a cold wall reactor by the pyrolytic decomposition of silane in the presence of heat and oxygen to a coating thickness of approximately between 0.1 and 3.0 microns. The apparatus and method of coating includes the placement of a quantity of phosphor in a cup-shaped heated reactor bowl and subjecting the particles to a temperature of about 490.degree. C. and an atmosphere of silane and oxygen, while continuously mechanically agitating the particles with a blade arrangement in which the particles are continuously rotated and turned so as to expose the surfaces of the heated particles to the reaction atmosphere.
    Type: Grant
    Filed: July 26, 1990
    Date of Patent: March 10, 1992
    Assignee: Lumel, Inc.
    Inventors: Nicholas T. Simopoulos, George N. Simopoulos
  • Patent number: 4961956
    Abstract: Electroluminescent phosphors, electroluminescent panels and lamps made with such phosphors, and a process and apparatus for treating phosphors are disclosed in which the phosphor particles are coated with a very thin coating of SiO.sub.2, to protect the phosphor particles from aging due to moisture intrusion. The phosphor particles are coated in a cold wall reactor by the pyrolytic decomposition of silane in the presence of heat and oxygen to a coating thickness of approximatley between 0.1 and 3.0 microns. The apparatus and method of coating includes the placement of a quantity of phosphor in a cup-shaped heated reactor bowl and subjecting the particles to a temperature of about 490.degree. C. and an atmosphere of silane and oxygen, while continuously mechanically agitating the particles with a blade arrangement in which the particles are continuously rotated and turned so as to expose the surfaces of the heated particles to the reaction atmosphere.
    Type: Grant
    Filed: May 8, 1989
    Date of Patent: October 9, 1990
    Assignee: Lumel, Inc.
    Inventors: Nicholas T. Simopoulos, George N. Simopoulos
  • Patent number: 4904901
    Abstract: An electroluminescent panel and method of making the same includes a plurality of layers on a transparent electrode in which each layer is formed with the same compatible polymer carrier resin base material so that the individual layers have an integrated uniformity. A polyester laminating resin is disclosed for the resin base material of each layer which is activated by a small amount of diisocyanate sufficient to provide temperature stability, but insufficient to transform the base material into a urethane. Also disclosed is an electroluminescent lamp which emits light only in discrete areas such as to produce a pattern of light in which the phosphor is applied in a pattern corresponding to the discrete areas which are to be illuminated. Similarly, the electrodes are restricted to the illuminated regions or areas, thereby conserving material as well as reducing the power requirements of the lamp.
    Type: Grant
    Filed: May 8, 1989
    Date of Patent: February 27, 1990
    Assignee: Lumel, Inc.
    Inventors: Nicholas T. Simopoulos, George N. Simopoulos, Gregory N. Simopoulos
  • Patent number: 4855189
    Abstract: Electroluminescent phosphors, electroluminescent panels and lamps made with such phosphors, and a process and apparatus for treating phosphors are disclosed in which the phosphor particles are coated with a very thin coating of SiO.sub.2, to protect the phosphor particles from aging due to moisture intrusion. The phosphor particles are coated in a cold wall reactor by the pyrolytic decomposition of silane in the presence of heat and oxygen to a coating thickness of approximately between 0.1 and 3.0 microns. The apparatus and method of coating includes the placement of a quantity of phosphor in a cup-shaped heated reactor bowl and subjecting the particles to a temperature of about 490.degree. C. and an atmosphere of silane and oxygen, while continuously mechanically agitating the particles with a blade arrangement in which the particles are continuously rotated and turned so as to expose the surfaces of the heated particles to the reaction atmosphere.
    Type: Grant
    Filed: November 24, 1987
    Date of Patent: August 8, 1989
    Assignee: Lumel, Inc.
    Inventors: Nicholas T. Simopoulos, George N. Simopoulos
  • Patent number: 4853079
    Abstract: An electroluminescent panel and method of making the same includes a plurality of layers on a transparent electrode in which each layer is formed with the same compatible polymer carrier resin base material so that the individual layers have an integrated uniformity. A polyester laminating resin is disclosed for the resin base material of each layer which is activated by a small amount of diisocyanate sufficient to provide temperature stability, but insufficient to transform the base material into a urethane.Also disclosed is an electroluminescent lamp which emits light only in discrete areas such as to produce a pattern of light in which the phosphor is applied in a pattern corresponding to the discrete areas which are to be illuminated. Similarly, the electrodes are restricted to the illuminated regions or areas, thereby conserving material as well as reducing the power requirements of the lamp.
    Type: Grant
    Filed: May 10, 1988
    Date of Patent: August 1, 1989
    Assignee: Lumel, Inc.
    Inventors: Nicholas T. Simopoulos, George N. Simopoulos, Gregory N. Simopoulos
  • Patent number: 4767966
    Abstract: An electroluminescent panel and method of making the same includes a plurality of layers on a transparent electrode in which each layer is formed with the same compatible polymer carrier resin base material so that the individual layers have an integrated uniformity. A polyester laminating resin is disclosed for the resin base material of each layer which is activated by a small amount of diisocyanate sufficient to provide temperature stability, but insuffient to transform the base material into a urethane. Also disclosed is an electroluminescent lamp which emits light only in discrete areas such as to produce a pattern of light in which the phosphor is applied in a pattern corresponding to the discrete areas which are to be illuminated. Similarly, the electrodes are restricted to the illuminated regions or areas, thereby conserving material as well as reducing the power requirements of the lamp.
    Type: Grant
    Filed: March 17, 1986
    Date of Patent: August 30, 1988
    Assignee: Luminescent Electronics, Inc.
    Inventors: Nicholas T. Simopoulos, George N. Simopoulos, Gregory N. Simopoulos
  • Patent number: 4647337
    Abstract: Flexible, electroluminescent panels or lamps employ a phosphor which is embedded in a coating formulation, in which a polyester laminating resin has been activated by a catalyst containing toluene diisocyanate or diphenylmethane diisocyanate, to provide a relatively high dielectric constant and to provide a flexible panel which is resistant to shorting, due to trimming, cutting or puncturing. The panel is characterized by relatively high efficiency and high light output.
    Type: Grant
    Filed: November 25, 1985
    Date of Patent: March 3, 1987
    Assignee: Luminescent Electronics, Inc.
    Inventors: Nicholas T. Simopoulos, George N. Simopoulos, Gregory N. Simopoulos
  • Patent number: 4595861
    Abstract: DC operated power supplies for electroluminescent lamps are self-inhibited from further oscillations and thus are current limited in the event that a failure occurs in an EL lamp which results in the EL lamp being shorted. Single ended and push/pull transformer power supplies are disclosed, and a transformerless solid state power supply is disclosed utilizing a voltage multiplier, and an inhibitor circuit at the output of the voltage multiplier responsive to substantial voltage drop upon the occurrence of a shorting of the EL lamp, to inhibit further oscillations and operations of the circuit.
    Type: Grant
    Filed: July 30, 1984
    Date of Patent: June 17, 1986
    Assignee: Luminescent Electronics, Inc.
    Inventors: Nicholas T. Simopoulos, George N. Simopoulos, Gregory N. Simopoulos