Patents by Inventor Ping Tao

Ping Tao 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).

  • Patent number: 11225675
    Abstract: The present invention provides D-lactate dehydrogenase, an engineered strain containing the D-lactate dehydrogenase and a construction method and use of the engineered strain. The present invention discloses a D-lactate dehydrogenase which has unique properties and is from Thermodesulfatator indicus, and the D-lactate dehydrogenase has good thermophily and heat stability. By using the D-lactate dehydrogenase and the gene engineering reconstruction method, a fermentation product of the reconstructed Bacillus licheniformis can be redirected to optically-pure D-lactic acid with a high yield from naturally produced 2,3-butanediol, and the optical purity of the produced D-lactic acid reaches 99.9%; and raw materials for fermentation are low-cost, and a fermentation state is between an anaerobic fermentation state and a microaerobic fermentation state.
    Type: Grant
    Filed: June 24, 2020
    Date of Patent: January 18, 2022
    Assignee: Shanghai Jiao Tong University
    Inventors: Ping Xu, Chao Li, Fei Tao, Hongzhi Tang
  • Patent number: 11223269
    Abstract: A circuit for controlling a switching power supply and a method for controlling a switching power supply by using the circuit for controlling the switching power supply, the circuit for controlling a switching power supply is configured to control a power stage circuit of a converter of the switching power supply. The circuit for controlling the switching power supply includes an external magnetic field direct detection unit, a current limit threshold unit, an operating frequency unit, a pulse width unit and a logic unit. The external magnetic field direct detection unit includes a Hall device and a Hall detection component. In accordance with the circuit for controlling the switching power supply of the present disclosure, the intensity of the external magnetic field can be detected directly at the chip level, and the operating mode of the switching power supply system can be adjusted timely.
    Type: Grant
    Filed: July 17, 2020
    Date of Patent: January 11, 2022
    Assignee: WUXI CHIPOWN MICROELECTRONICS CO., LTD.
    Inventors: Ping Tao, Haijun Zhou, Haisong Li, Yangbo Yi, Wei Gao
  • Publication number: 20210384839
    Abstract: A power supply control circuit for a switch mode power supply converter, and a power supply control method using the control circuit. The control circuit includes an auxiliary boosting unit, a main control unit and an auxiliary winding unit. The main control unit is configured to control the power switch in a power stage circuit to turn on or to be off, and to supply power to the auxiliary boosting unit. The auxiliary boosting unit is configured to provide auxiliary power for the main control unit, and to self-adaptively adjust the auxiliary boosting unit's own average switching frequency based on a load state of the main control unit. The auxiliary winding unit is configured to couple energy by means of a magnetic element in the power stage circuit, to generate an output voltage.
    Type: Application
    Filed: August 20, 2021
    Publication date: December 9, 2021
    Inventors: Ping TAO, Haijun ZHOU, Haisong LI, Yangbo YI, Wei GAO, Hongxing LI
  • Publication number: 20210336554
    Abstract: A circuit for controlling a switching power supply and a method for controlling a switching power supply by using the circuit for controlling the switching power supply, the circuit for controlling a switching power supply is configured to control a power stage circuit of a converter of the switching power supply. The circuit for controlling the switching power supply includes an external magnetic field direct detection unit, a current limit threshold unit, an operating frequency unit, a pulse width unit and a logic unit. The external magnetic field direct detection unit includes a Hall device and a Hall detection component. In accordance with the circuit for controlling the switching power supply of the present disclosure, the intensity of the external magnetic field can be detected directly at the chip level, and the operating mode of the switching power supply system can be adjusted timely.
    Type: Application
    Filed: July 17, 2020
    Publication date: October 28, 2021
    Inventors: Ping TAO, Haijun ZHOU, Haisong LI, Yangbo YI, Wei GAO
  • Patent number: 11060992
    Abstract: A probe system includes a heater and a control circuit. The heater includes a resistive heating element routed through the probe. An operational voltage is provided to the resistive heating element to provide heating for the probe. The control circuit is configured to provide a test voltage different than the operational voltage and monitor a test current generated in the resistive heating element while providing the test voltage. The control circuit is further configured to detect micro fractures in the resistive heating element based on the test current.
    Type: Grant
    Filed: March 24, 2017
    Date of Patent: July 13, 2021
    Assignee: Rosemount Aerospace Inc.
    Inventors: Ben Ping-Tao Fok, Thomas Wingert
  • Patent number: 10914777
    Abstract: A system and method for an aircraft includes a probe, first and second current sensors, and a control circuit. The probe includes a heater that includes a resistive heating element routed through the probe, wherein an operational current is provided to the resistive heating element to provide heating for the probe. The first current sensor is configured to sense a first current through the resistive heating element, and the second current sensor is configured to sense a second current through the resistive heating element. The control circuit is configured to determine a leakage current based on the first and second currents and determine a remaining useful life the probe based on the leakage current over time.
    Type: Grant
    Filed: June 15, 2017
    Date of Patent: February 9, 2021
    Assignee: Rosemount Aerospace Inc.
    Inventors: Magdi A. Essawy, Ben Ping-Tao Fok, Thomas Wingert
  • Publication number: 20200373109
    Abstract: Disclosed is a thin-film micro-fuse assembly having: a substrate; an insulating layer disposed on the substrate, the insulating layer comprising silicon dioxide; a conductor disposed on the insulating layer, the conductor forming: an inlet terminal, an outlet terminal and a fuse element between the inlet terminal and the outlet terminal, the inlet terminal and the outlet terminal widthwise converging toward the fuse element, and the fuse element having a first thickness and a first width that is between 1 and 5 times the first thickness.
    Type: Application
    Filed: May 21, 2019
    Publication date: November 26, 2020
    Inventors: David P. Potasek, Ben Ping-Tao Fok, Roger Alan Backman
  • Patent number: 10564203
    Abstract: A probe system includes a heater and a control circuit. The heater includes a resistive heating element routed through the probe system. An operational voltage is provided to the resistive heating element to provide heating for the probe system. The control circuit is configured to provide the operational voltage and monitor a capacitance between the resistive heating element and a metallic sheath of the heater over time. The control circuit is further configured to determine a remaining useful life of the probe system based on the capacitance.
    Type: Grant
    Filed: March 24, 2017
    Date of Patent: February 18, 2020
    Assignee: Rosemount Aerospace Inc.
    Inventors: Magdi A. Essawy, Ben Ping-Tao Fok
  • Patent number: 10197517
    Abstract: A probe system is configured to receive thermal images of the probe system from a thermal imager and includes a heater and a control circuit. The heater includes a resistive heating element routed through the probe. An operational voltage is provided to the resistive heating element to provide heating for the probe. The control circuit is configured to provide the operational voltage and receive the thermal images from the thermal imager. The control circuit is further configured to monitor the thermal images over time and determine a remaining useful life of the probe system based upon the thermal images over time.
    Type: Grant
    Filed: March 24, 2017
    Date of Patent: February 5, 2019
    Assignee: Rosemount Aerospace, Inc.
    Inventors: Magdi A. Essawy, Ben Ping-Tao Fok, Marvin Gary Onken
  • Patent number: 10180449
    Abstract: A probe system includes a heater and a control circuit. The heater includes a resistive heating element routed through the probe. An operational current is provided to the resistive heating element to provide heating for the probe. The control circuit is configured to monitor the operational current over time and determine a half-life estimate of the resistive heating element based upon an exponential function of the operational current over time.
    Type: Grant
    Filed: March 24, 2017
    Date of Patent: January 15, 2019
    Assignee: Rosemount Aerospace Inc.
    Inventors: Magdi A. Essawy, Ben Ping-Tao Fok
  • Patent number: 10151785
    Abstract: A probe system includes a heater and a control circuit. The heater includes a resistive heating element routed through the probe system. An operational voltage is provided to the resistive heating element to provide heating for the probe system. The control circuit is configured to provide the operational voltage and monitor a circuit frequency based on an element capacitance between the resistive heating element and a metallic sheath of the heater over time. The control circuit is further configured to determine remaining useful life of the probe system based on the circuit frequency.
    Type: Grant
    Filed: March 24, 2017
    Date of Patent: December 11, 2018
    Assignee: Rosemount Aerospace Inc.
    Inventors: Magdi A. Essawy, James Joseph McTighe, Ben Ping-Tao Fok
  • Publication number: 20180275181
    Abstract: A probe system includes a heater and a control circuit. The heater includes a resistive heating element routed through the probe system. An operational voltage is provided to the resistive heating element to provide heating for the probe system. The control circuit is configured to provide the operational voltage and monitor a capacitance between the resistive heating element and a metallic sheath of the heater over time. The control circuit is further configured to determine a remaining useful life of the probe system based on the capacitance.
    Type: Application
    Filed: March 24, 2017
    Publication date: September 27, 2018
    Inventors: Magdi A. Essawy, Ben Ping-Tao Fok
  • Publication number: 20180275080
    Abstract: A probe system is configured to receive thermal images of the probe system from a thermal imager and includes a heater and a control circuit. The heater includes a resistive heating element routed through the probe. An operational voltage is provided to the resistive heating element to provide heating for the probe. The control circuit is configured to provide the operational voltage and receive the thermal images from the thermal imager. The control circuit is further configured to monitor the thermal images over time and determine a remaining useful life of the probe system based upon the thermal images over time.
    Type: Application
    Filed: March 24, 2017
    Publication date: September 27, 2018
    Inventors: Magdi A. Essawy, Ben Ping-Tao Fok, Marvin Gary Onken
  • Publication number: 20180275185
    Abstract: A system and method for an aircraft includes a probe, first and second current sensors, and a control circuit. The probe includes a heater that includes a resistive heating element routed through the probe, wherein an operational current is provided to the resistive heating element to provide heating for the probe. The first current sensor is configured to sense a first current through the resistive heating element, and the second current sensor is configured to sense a second current through the resistive heating element. The control circuit is configured to determine a leakage current based on the first and second currents and determine a remaining useful life the probe based on the leakage current over time.
    Type: Application
    Filed: June 15, 2017
    Publication date: September 27, 2018
    Inventors: Magdi A. Essawy, Ben Ping-Tao Fok, Thomas Wingert
  • Publication number: 20180275085
    Abstract: A probe system includes a heater and a control circuit. The heater includes a resistive heating element routed through the probe. An operational voltage is provided to the resistive heating element to provide heating for the probe. The control circuit is configured to provide a test voltage different than the operational voltage and monitor a test current generated in the resistive heating element while providing the test voltage. The control circuit is further configured to detect micro fractures in the resistive heating element based on the test current.
    Type: Application
    Filed: March 24, 2017
    Publication date: September 27, 2018
    Inventors: Ben Ping-Tao Fok, Thomas Wingert
  • Publication number: 20180275182
    Abstract: A probe system includes a heater and a control circuit. The heater includes a resistive heating element routed through the probe system. An operational voltage is provided to the resistive heating element to provide heating for the probe system. The control circuit is configured to provide the operational voltage and monitor a circuit frequency based on an element capacitance between the resistive heating element and a metallic sheath of the heater over time. The control circuit is further configured to determine remaining useful life of the probe system based on the circuit frequency.
    Type: Application
    Filed: March 24, 2017
    Publication date: September 27, 2018
    Inventors: Magdi A. Essawy, James Joseph McTighe, Ben Ping-Tao Fok
  • Publication number: 20180275184
    Abstract: A probe system includes a heater and a control circuit. The heater includes a resistive heating element routed through the probe. An operational current is provided to the resistive heating element to provide heating for the probe. The control circuit is configured to monitor the operational current over time and determine a half-life estimate of the resistive heating element based upon an exponential function of the operational current over time.
    Type: Application
    Filed: March 24, 2017
    Publication date: September 27, 2018
    Inventors: Magdi A. Essawy, Ben Ping-Tao Fok
  • Patent number: 9985543
    Abstract: A switching power supply is provided which includes: an output port; a transformer; a first voltage divider circuit, configured to divide a feedback voltage to obtain a first divided voltage; and a primary controller, configured to control a current of the primary winding of the transformer; where the primary controller includes: a first comparison module, configured to compare the first divided voltage with a first reference voltage to obtain a first comparison result; a second comparison module, configured to compare the power supply voltage with a second reference voltage to obtain a second comparison result; and an open circuit protection module, configured to generate an open circuit protection signal, where the primary controller is configured to stop control of the primary winding in response to the open circuit protection signal. The present disclosure can efficiently detect disconnection of the up-sampling resistor of the switching power supply and provide open-circuit protection.
    Type: Grant
    Filed: June 23, 2017
    Date of Patent: May 29, 2018
    Assignee: SUZHOU POWERON IC DESIGN CO., LTD.
    Inventors: Yangbo Yi, Haisong Li, Changshen Zhao, Wenliang Liu, Ping Tao
  • Patent number: 9812945
    Abstract: The present disclosure relates to a circuit structure for enhancing EFT immunity of primary side converter, including a power ground and a feedback voltage detecting block, a feedback current detecting block, a controller, a PWM driving block, a high voltage starting block, a starting unit, a circuit for enhancing EFT immunity of primary side converter, a power MOS transistor, and an OR gate configured to perform a logical OR of an off-time calculated theoretically and an off-time output by an off-time control block. The present disclosure enhances EFT immunity effectively and improves the dynamic characteristics of the primary side converter.
    Type: Grant
    Filed: October 12, 2015
    Date of Patent: November 7, 2017
    Assignee: Wuxi Chipown Micro-Electronics, Limited
    Inventors: Haisong Li, Ping Tao, Changshen Zhao, Yangbo Yi
  • Patent number: D910324
    Type: Grant
    Filed: June 13, 2018
    Date of Patent: February 16, 2021
    Inventor: Shou-Ping Tao