Patents by Inventor Andre B. Kurs
Andre B. Kurs 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: 20240270218Abstract: A wireless power system for powering a television includes a source resonator, configured to generate an oscillating magnetic field, and at least one television component attached to at least one device resonator, wherein the at least one device resonator is configured to wirelessly receive power from the source resonator via the oscillating magnetic field when the distance between the source resonator and the at least one device resonator is more than 5 cm, and wherein at least one television component draws at least 10 Watts of power.Type: ApplicationFiled: April 3, 2024Publication date: August 15, 2024Inventors: Andre B. Kurs, Aristeidis Karalis, Morris P. Kesler, Andrew J. Campanella
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Patent number: 11958370Abstract: A wireless power transmitter includes a first inductive element featuring a planar coil occupying a first plane and having first and second terminals, a first capacitive element connected to the first terminal, an inverter configured to provide an oscillating voltage signal to the first inductive element, through the first capacitive element, such that the first inductive element generates an oscillating magnetic field for transmitting power in response to the oscillating voltage signal, and a layer of magnetic material, disposed over the planar coil in a second plane parallel to the first plane.Type: GrantFiled: August 31, 2021Date of Patent: April 16, 2024Assignee: WiTricity CorporationInventors: Andre B. Kurs, Aristeidis Karalis, Morris P. Kesler, Andrew J. Campanella
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Patent number: 11807115Abstract: Methods, systems, and devices for controlling a variable capacitor. One aspect features a variable capacitance device that includes a capacitor, a first transistor, a second transistor, and control circuitry. The control circuitry is configured to adjust an effective capacitance of the capacitor by performing operations including detecting a zero-crossing of an input current at a first time. Switching off the first transistor. Estimating a first delay period for switching the first transistor on when a voltage across the capacitor is zero. Switching on the first transistor after the first delay period from the first time. Detecting a zero-crossing of the input current at a second time. Switching off the second transistor. Estimating a second delay period for switching the second transistor on when a voltage across the capacitor is zero. Switching on the second transistor after the second delay period from the second time.Type: GrantFiled: January 15, 2021Date of Patent: November 7, 2023Assignee: WiTricity CorporationInventors: Andre B. Kurs, Milisav Danilovic
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Patent number: 11720133Abstract: The disclosure features wireless power transfer systems that include a power transmitting apparatus configured to wirelessly transmit power, a power receiving apparatus connected to an electrical load and configured to receive power from the power transmitting apparatus, and a controller connected to the power transmitting apparatus and configured to receive information about a phase difference between output voltage and current waveforms in a power source of the power transmitting apparatus, and to adjust a frequency of the transmitted power based on the measured phase difference.Type: GrantFiled: August 24, 2021Date of Patent: August 8, 2023Assignee: WiTricity CorporationInventors: Andre B. Kurs, Morris P. Kesler, Noam Katz, Matthew Dillon, Herbert Toby Lou
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Patent number: 11685270Abstract: Disclosed is an apparatus for use in wireless energy transfer, which includes a first resonator structure configured to transfer energy non-radiatively with a second resonator structure over a distance greater than a characteristic size of the second resonator structure. The non-radiative energy transfer is mediated by a coupling of a resonant field evanescent tail of the first resonator structure and a resonant field evanescent tail of the second resonator structure.Type: GrantFiled: September 1, 2020Date of Patent: June 27, 2023Assignee: MITInventors: Aristeidis Karalis, Andre B. Kurs, Robert Moffatt, John D. Joannopoulos, Peter H. Fisher, Marin Soljacic
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Patent number: 11637458Abstract: The disclosure features wireless energy transfer sources that include at least two source resonators and a power source, where: each of the at least two source resonators has a nominal impedance when a device resonator is not positioned on or near any of the at least two source resonators, the nominal impedances of each of the at least two source resonators varying by 10% or less from one another; and the at least two source resonators are configured so that during operation of the wireless energy transfer source, when a device resonator is positioned on or near a first one of the at least two source resonators: (a) the impedance of the first source resonator is reduced to a value smaller than the nominal impedances of each of the other resonators by a factor of 2 or more.Type: GrantFiled: February 12, 2021Date of Patent: April 25, 2023Assignee: WiTricity CorporationInventors: Alexander P. McCauley, Arunanshu M. Roy, Noam Katz, Andre B. Kurs, Morris P. Kesler
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Patent number: 11479132Abstract: A wireless power system for powering a television includes a source resonator, configured to generate an oscillating magnetic field, and at least one television component attached to at least one device resonator, wherein the at least one device resonator is configured to wirelessly receive power from the source resonator via the oscillating magnetic field when the distance between the source resonator and the at least one device resonator is more than 5 cm, and wherein at least one television component draws at least 10 Watts of power.Type: GrantFiled: August 31, 2021Date of Patent: October 25, 2022Assignee: WiTricity CorporationInventors: Andre B. Kurs, Andrew J. Campanella, Aristeidis Karalis, Katherine L. Hall, Morris P. Kesler
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Publication number: 20220123595Abstract: A wireless power system for powering a television includes a source resonator, configured to generate an oscillating magnetic field, and at least one television component attached to at least one device resonator, wherein the at least one device resonator is configured to wirelessly receive power from the source resonator via the oscillating magnetic field when the distance between the source resonator and the at least one device resonator is more than 5 cm, and wherein at least one television component draws at least 10 Watts of power.Type: ApplicationFiled: August 31, 2021Publication date: April 21, 2022Inventors: Andre B. Kurs, Aristeidis Karalis, Morris P. Kesler, Andrew J. Campanella
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Publication number: 20220123596Abstract: A wireless power system for powering a television includes a source resonator, configured to generate an oscillating magnetic field, and at least one television component attached to at least one device resonator, wherein the at least one device resonator is configured to wirelessly receive power from the source resonator via the oscillating magnetic field when the distance between the source resonator and the at least one device resonator is more than 5 cm, and wherein at least one television component draws at least 10 Watts of power.Type: ApplicationFiled: August 31, 2021Publication date: April 21, 2022Inventors: Andre B. Kurs, Andrew J. Campanella, Aristeidis Karalis, Katherine L. Hall, Morris P. Kesler
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Publication number: 20220083087Abstract: The disclosure features wireless power transfer systems that include a power transmitting apparatus configured to wirelessly transmit power, a power receiving apparatus connected to an electrical load and configured to receive power from the power transmitting apparatus, and a controller connected to the power transmitting apparatus and configured to receive information about a phase difference between output voltage and current waveforms in a power source of the power transmitting apparatus, and to adjust a frequency of the transmitted power based on the measured phase difference.Type: ApplicationFiled: August 24, 2021Publication date: March 17, 2022Inventors: Andre B. Kurs, Morris P. Kesler, Noam Katz, Matthew Dillon, Herbert Toby Lou
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Patent number: 11114897Abstract: A wireless power system for powering a television includes a source resonator, configured to generate an oscillating magnetic field, and at least one television component attached to at least one device resonator, wherein the at least one device resonator is configured to wirelessly receive power from the source resonator via the oscillating magnetic field when the distance between the source resonator and the at least one device resonator is more than 5 cm, and wherein at least one television component draws at least 10 Watts of power.Type: GrantFiled: December 23, 2019Date of Patent: September 7, 2021Assignee: WiTricity CorporationInventors: Andre B. Kurs, Andrew J. Campanella, Aristeidis Karalis, Katherine L. Hall, Morris P. Kesler
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Patent number: 11112814Abstract: The disclosure features wireless power transfer systems that include a power transmitting apparatus configured to wirelessly transmit power, a power receiving apparatus connected to an electrical load and configured to receive power from the power transmitting apparatus, and a controller connected to the power transmitting apparatus and configured to receive information about a phase difference between output voltage and current waveforms in a power source of the power transmitting apparatus, and to adjust a frequency of the transmitted power based on the measured phase difference.Type: GrantFiled: December 11, 2017Date of Patent: September 7, 2021Assignee: WiTricity CorporationInventors: Andre B. Kurs, Morris P. Kesler, Noam Katz, Matthew Dillon, Herbert Toby Lou
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Patent number: 11114896Abstract: A wireless power system for powering a television includes a source resonator, configured to generate an oscillating magnetic field, and at least one television component attached to at least one device resonator, wherein the at least one device resonator is configured to wirelessly receive power from the source resonator via the oscillating magnetic field when the distance between the source resonator and the at least one device resonator is more than 5 cm, and wherein at least one television component draws at least 10 Watts of power.Type: GrantFiled: June 28, 2019Date of Patent: September 7, 2021Assignee: WiTricity CorporationInventors: Andre B. Kurs, Aristeidis Karalis, Morris P. Kesler, Andrew J. Campanella
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Publication number: 20210167633Abstract: The disclosure features wireless energy transfer sources that include at least two source resonators and a power source, where: each of the at least two source resonators has a nominal impedance when a device resonator is not positioned on or near any of the at least two source resonators, the nominal impedances of each of the at least two source resonators varying by 10% or less from one another; and the at least two source resonators are configured so that during operation of the wireless energy transfer source, when a device resonator is positioned on or near a first one of the at least two source resonators: (a) the impedance of the first source resonator is reduced to a value smaller than the nominal impedances of each of the other resonators by a factor of 2 or more.Type: ApplicationFiled: February 12, 2021Publication date: June 3, 2021Inventors: Alexander P. McCauley, Arunanshu M. Roy, Noam Katz, Andre B. Kurs, Morris P. Kesler
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Publication number: 20210129690Abstract: Methods, systems, and devices for controlling a variable capacitor. One aspect features a variable capacitance device that includes a capacitor, a first transistor, a second transistor, and control circuitry. The control circuitry is configured to adjust an effective capacitance of the capacitor by performing operations including detecting a zero-crossing of an input current at a first time. Switching off the first transistor. Estimating a first delay period for switching the first transistor on when a voltage across the capacitor is zero. Switching on the first transistor after the first delay period from the first time. Detecting a zero-crossing of the input current at a second time. Switching off the second transistor. Estimating a second delay period for switching the second transistor on when a voltage across the capacitor is zero. Switching on the second transistor after the second delay period from the second time.Type: ApplicationFiled: January 15, 2021Publication date: May 6, 2021Inventors: Andre B. Kurs, Milisav Danilovic
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Publication number: 20210078418Abstract: Disclosed is an apparatus for use in wireless energy transfer, which includes a first resonator structure configured to transfer energy non-radiatively with a second resonator structure over a distance greater than a characteristic size of the second resonator structure. The non-radiative energy transfer is mediated by a coupling of a resonant field evanescent tail of the first resonator structure and a resonant field evanescent tail of the second resonator structure.Type: ApplicationFiled: September 1, 2020Publication date: March 18, 2021Inventors: Aristeidis Karalis, Andre B. Kurs, Robert Moffatt, John D. Joannopoulos, Peter H. Fisher, Marin Soljacic
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Patent number: 10923921Abstract: The disclosure features wireless energy transfer sources that include at least two source resonators and a power source, where: each of the at least two source resonators has a nominal impedance when a device resonator is not positioned on or near any of the at least two source resonators, the nominal impedances of each of the at least two source resonators varying by 10% or less from one another; and the at least two source resonators are configured so that during operation of the wireless energy transfer source, when a device resonator is positioned on or near a first one of the at least two source resonators: (a) the impedance of the first source resonator is reduced to a value smaller than the nominal impedances of each of the other resonators by a factor of 2 or more.Type: GrantFiled: April 19, 2018Date of Patent: February 16, 2021Assignee: WiTricity CorporationInventors: Alexander P. McCauley, Arunanshu M. Roy, Noam Katz, Andre B. Kurs, Morris P. Kesler
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Patent number: 10913368Abstract: Methods, systems, and devices for controlling a variable capacitor. One aspect features a variable capacitance device that includes a capacitor, a first transistor, a second transistor, and control circuitry. The control circuitry is configured to adjust an effective capacitance of the capacitor by performing operations including detecting a zero-crossing of an input current at a first time. Switching off the first transistor. Estimating a first delay period for switching the first transistor on when a voltage across the capacitor is zero. Switching on the first transistor after the first delay period from the first time. Detecting a zero-crossing of the input current at a second time. Switching off the second transistor. Estimating a second delay period for switching the second transistor on when a voltage across the capacitor is zero. Switching on the second transistor after the second delay period from the second time.Type: GrantFiled: July 18, 2018Date of Patent: February 9, 2021Assignee: WiTricity CorporationInventors: Andre B. Kurs, Milisav Danilovic
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Publication number: 20200280214Abstract: A wireless power system for powering a television includes a source resonator, configured to generate an oscillating magnetic field, and at least one television component attached to at least one device resonator, wherein the at least one device resonator is configured to wirelessly receive power from the source resonator via the oscillating magnetic field when the distance between the source resonator and the at least one device resonator is more than 5 cm, and wherein at least one television component draws at least 10 Watts of power.Type: ApplicationFiled: December 23, 2019Publication date: September 3, 2020Inventors: Andre B. Kurs, Andrew J. Campanella, Aristeidis Karalis, Katherine L. Hall, Morris P. Kesler
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Patent number: 10707693Abstract: A wireless power receiver is coupled to an impedance matching network, the impedance matching network having a first node and a second node. Coupled to the first node is a first branch having a first positive reactance and a second branch having a first negative reactance, wherein an absolute value of the first positive reactance is different from an absolute value of the first negative reactance, and coupled to the second node is a third branch having a second positive reactance and a fourth branch having a second negative reactance, wherein an absolute value of the second positive reactance is different from an absolute value of the second negative reactance.Type: GrantFiled: August 16, 2019Date of Patent: July 7, 2020Assignee: WiTricity CorporationInventors: Milisav Danilovic, Andre B. Kurs