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).
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Publication number: 20200191926Abstract: 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: ApplicationFiled: December 19, 2018Publication date: June 18, 2020Inventors: Chenghui F. Hao, Ronald M. Taylor, Roman J. Dietz, Ashwin K. Samarao, George N. Simopoulos
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Patent number: 9369001Abstract: 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: GrantFiled: May 16, 2013Date of Patent: June 14, 2016Assignee: Delphi Technologies, Inc.Inventors: George N. Simopoulos, Jeffrey A. Ely
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Publication number: 20140339923Abstract: 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: ApplicationFiled: May 16, 2013Publication date: November 20, 2014Inventors: GEORGE N. SIMOPOULOS, JEFFREY A. ELY
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Patent number: 7937935Abstract: 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: GrantFiled: January 28, 2008Date of Patent: May 10, 2011Assignee: Delphi Technologies, Inc.Inventors: John D. Williams, Tanto Sugiarto, George N. Simopoulos
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Method for triggering a regeneration event in a particulates filter of an internal combustion engine
Patent number: 7930880Abstract: 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: GrantFiled: January 28, 2008Date of Patent: April 26, 2011Assignee: Delphi Technologies, Inc.Inventors: John D. Williams, Tanto Sugiarto, Thomas M. Harris, George N. Simopoulos -
Patent number: 7648784Abstract: 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: GrantFiled: March 9, 2006Date of Patent: January 19, 2010Assignee: Delphi Technologies, Inc.Inventors: Kaushik Rajashekara, George N. Simopoulos, Michael T. Faville, Elwood W. Wingeier
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Publication number: 20090305087Abstract: 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: ApplicationFiled: March 9, 2006Publication date: December 10, 2009Inventors: Kaushik Rajashekara, George N. Simopoulos, Michael T. Faville, Elwood W. Wingeier
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Method for triggering a regeneration event in a particulates filter of an internal combustion engine
Publication number: 20090188242Abstract: 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: ApplicationFiled: January 28, 2008Publication date: July 30, 2009Inventors: John D. Williams, Tanto Sugiarto, Thomas M. Harris, George N. Simopoulos -
Publication number: 20090188243Abstract: 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: ApplicationFiled: January 28, 2008Publication date: July 30, 2009Inventors: John D. Williams, Tanto Sugiarto, George N. Simopoulos
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Patent number: 5094185Abstract: 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: GrantFiled: July 26, 1990Date of Patent: March 10, 1992Assignee: Lumel, Inc.Inventors: Nicholas T. Simopoulos, George N. Simopoulos
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Patent number: 4961956Abstract: 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: GrantFiled: May 8, 1989Date of Patent: October 9, 1990Assignee: Lumel, Inc.Inventors: Nicholas T. Simopoulos, George N. Simopoulos
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Patent number: 4904901Abstract: 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: GrantFiled: May 8, 1989Date of Patent: February 27, 1990Assignee: Lumel, Inc.Inventors: Nicholas T. Simopoulos, George N. Simopoulos, Gregory N. Simopoulos
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Patent number: 4855189Abstract: 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: GrantFiled: November 24, 1987Date of Patent: August 8, 1989Assignee: Lumel, Inc.Inventors: Nicholas T. Simopoulos, George N. Simopoulos
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Patent number: 4853079Abstract: 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: GrantFiled: May 10, 1988Date of Patent: August 1, 1989Assignee: Lumel, Inc.Inventors: Nicholas T. Simopoulos, George N. Simopoulos, Gregory N. Simopoulos
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Patent number: 4767966Abstract: 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: GrantFiled: March 17, 1986Date of Patent: August 30, 1988Assignee: Luminescent Electronics, Inc.Inventors: Nicholas T. Simopoulos, George N. Simopoulos, Gregory N. Simopoulos
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Patent number: 4647337Abstract: 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: GrantFiled: November 25, 1985Date of Patent: March 3, 1987Assignee: Luminescent Electronics, Inc.Inventors: Nicholas T. Simopoulos, George N. Simopoulos, Gregory N. Simopoulos
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Patent number: 4595861Abstract: 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: GrantFiled: July 30, 1984Date of Patent: June 17, 1986Assignee: Luminescent Electronics, Inc.Inventors: Nicholas T. Simopoulos, George N. Simopoulos, Gregory N. Simopoulos