Patents by Inventor Xiao Chang

Xiao Chang 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: 12145451
    Abstract: The method includes: when the vehicle satisfies a one-pedal activating condition, controlling the vehicle to enter a one-pedal-function activating mode; when the vehicle enters the one-pedal-function activating mode and satisfies a parking-controlling-function activating condition, acquiring current-vehicle-speed information, road-slope information and a first electric-motor recovering torque; based on the current-vehicle-speed information and the road-slope information, calculating to obtain a parking torque; acquiring a first torque difference between the parking torque and the first electric-motor recovering torque; and performing pressure buildup to the vehicle based on the first torque difference, to control the vehicle to complete a parking operation.
    Type: Grant
    Filed: January 13, 2021
    Date of Patent: November 19, 2024
    Assignee: GREAT WALL MOTOR COMPANY LIMITED
    Inventors: Shuai Zhang, Shujiang Chen, Wentao Hou, Qing Zhao, Xiao Chang, Tong Kang, Jiaxin Sun, Wenchao Ling, Weifeng Deng
  • Publication number: 20230357849
    Abstract: Compositions and methods for the treatment and diagnosis of eosinophilic esophagitis are disclosed.
    Type: Application
    Filed: September 8, 2021
    Publication date: November 9, 2023
    Applicant: THE CHILDREN'S HOSPITAL OF PHILADELPHIA
    Inventors: Hakon Hakonarson, Patrick Sleiman, Xiao Chang
  • Publication number: 20230050845
    Abstract: The method includes: when the vehicle satisfies a one-pedal activating condition, controlling the vehicle to enter a one-pedal-function activating mode; when the vehicle enters the one-pedal-function activating mode and satisfies a parking-controlling-function activating condition, acquiring current-vehicle-speed information, road-slope information and a first electric-motor recovering torque; based on the current-vehicle-speed information and the road-slope information, calculating to obtain a parking torque; acquiring a first torque difference between the parking torque and the first electric-motor recovering torque; and performing pressure buildup to the vehicle based on the first torque difference, to control the vehicle to complete a parking operation.
    Type: Application
    Filed: January 13, 2021
    Publication date: February 16, 2023
    Inventors: Shuai ZHANG, Shujiang CHEN, Wentao HOU, Qing ZHAO, Xiao CHANG, Tong KANG, Jiaxin SUN, Wenchao LING, Weifeng DENG
  • Patent number: 10100362
    Abstract: Compositions and methods for the identification of agents useful for the treatment of neurological disorders, including schizophrenia, are provided.
    Type: Grant
    Filed: September 14, 2015
    Date of Patent: October 16, 2018
    Assignee: The Children's Hospital of Philadelphia
    Inventors: Hakon Hakonarson, Patrick Sleiman, Xiao Chang
  • Publication number: 20160032390
    Abstract: Compositions and methods for the identification of agents useful for the treatment of neurological disorders, including schizophrenia, are provided.
    Type: Application
    Filed: September 14, 2015
    Publication date: February 4, 2016
    Inventors: Hakon Hakonarson, Patrick Sleiman, Xiao Chang
  • Patent number: 8449990
    Abstract: An organic light emitting device is provided. The device has an anode, a cathode, and an emissive layer disposed between the anode and the cathode. The emissive layer further includes a molecule of Formula I (shown below) wherein an alkyl substituent at position R?5 results in high efficiency and operational stability in the organic light emitting device.
    Type: Grant
    Filed: March 16, 2010
    Date of Patent: May 28, 2013
    Assignee: Universal Display Corporation
    Inventors: Raymond Kwong, David Knowles, Bin Ma, Xiao-Chang Charles Li, William Ceyrolles
  • Patent number: 8071875
    Abstract: Semiconductor ink is disclosed for use in printing thin film solar cell absorber layer. The semiconductor ink is particularly useful in fabricating multi junction tandem solar cell wherein a high bandgap absorber layer as the top cell and a lower band gap absorber layer as the bottom cell. The ink contains ingredients of IB-IIIA-VIA compound with micron-sized semiconductor as the main building “bricks” and nano-sized semiconductor as the binder to fulfill the formation of smooth semiconductive film with micron-sized crystal grain size. Thus formed ink can be used in direct printing for the fabrication of low cost high performance solar cells.
    Type: Grant
    Filed: September 15, 2009
    Date of Patent: December 6, 2011
    Inventor: Xiao-Chang Charles Li
  • Patent number: 8022682
    Abstract: A circuit for minimizing voltage inrush upon startup in a switching power converter having a switching stage including high and low switches connected at a common node, a feedback loop for maintaining a target output voltage, an output capacitor connected between an output node and the ground, an inductor connected between the common node and the output node, and a control circuit having a first error amplifier for providing a first signal based on a comparison of a reference voltage and voltage provided by the feedback loop, the control circuit including a level switch connected between the ground and the common node, the level switch being controlled in accordance with the first signal, wherein a large inrush current flowing into the output capacitor when the circuit is starting up is minimized.
    Type: Grant
    Filed: April 27, 2007
    Date of Patent: September 20, 2011
    Assignee: International Rectifier Corporation
    Inventors: Jun Honda, Xiao-chang Cheng
  • Publication number: 20110065228
    Abstract: Semiconductor ink is disclosed for use in printing thin film solar cell absorber layer. The semiconductor ink is particularly useful in fabricating multi junction tandem solar cell wherein a high bandgap absorber layer as the top cell and a lower band gap absorber layer as the bottom cell. The ink contains ingredients of IB-IIIA-VIA compound with micron-sized semiconductor as the main building “bricks” and nano-sized semiconductor as the binder to fulfill the formation of smooth semiconductive film with micron-sized crystal grain size. Thus formed ink can be used in direct printing for the fabrication of low cost high performance solar cells.
    Type: Application
    Filed: September 15, 2009
    Publication date: March 17, 2011
    Inventor: Xiao-Chang Charles Li
  • Patent number: 7795802
    Abstract: Optical devices fabricated from solvent processible polymers suffer from susceptibility to solvents and morphological changes. A semiconductive polymer capable of luminescence in an optical device is provided. The polymer comprises a luminescent film-forming solvent processible polymer which contains cross-linking so as to increase its molar mass and to resist solvent dissolution, the cross-linking being such that the polymer retains semiconductive and luminescent properties.
    Type: Grant
    Filed: July 18, 2005
    Date of Patent: September 14, 2010
    Assignee: Cambridge Display Technology Ltd.
    Inventors: Andrew Bruce Holmes, Xiao-Chang Li, Stephen Carl Moratti, Kenneth Andrew Murray, Richard Henry Friend
  • Publication number: 20100176390
    Abstract: An organic light emitting device is provided. The device has an anode, a cathode, and an emissive layer disposed between the anode and the cathode. The emissive layer further includes a molecule of Formula I (shown below) wherein an alkyl substituent at position R?5 results in high efficiency and operational stability in the organic light emitting device.
    Type: Application
    Filed: March 16, 2010
    Publication date: July 15, 2010
    Inventors: Raymond KWONG, David KNOWLES, Bin MA, Xiao-Chang Charles LI, William CEYROLLES
  • Patent number: 7724054
    Abstract: A dead-time generator for incorporation in an integrated circuit wherein the integrated circuit includes a high side and low side gate driver and wherein the high side and low side gate driver drive output switches such that a dead-time is provided between on times of the output switches, the dead-time generator comprising a circuit internal to the integrated circuit having an external terminal at which a dead-time setting component is connected, and wherein the dead-time generator comprises a circuit for providing a discrete dead-time for a range of dead-time setting values at the dead-time setting terminal and wherein, for a plurality of ranges of dead-time setting values at the dead-time setting terminal, the dead-time generator generates an associated plurality of discrete dead-times.
    Type: Grant
    Filed: September 6, 2005
    Date of Patent: May 25, 2010
    Assignee: International Rectifier Corporation
    Inventors: Jun Honda, Xiao-Chang Cheng
  • Patent number: 7709100
    Abstract: An organic light emitting device is provided. The device has an anode, a cathode, and an emissive layer disposed between the anode and the cathode. The emissive layer further includes a molecule of Formula I (shown below) wherein an alkyl substituent at position R?5, which is an alkyl substituent, results in high efficiency and operational stability in the organic light emitting device.
    Type: Grant
    Filed: December 21, 2004
    Date of Patent: May 4, 2010
    Assignee: Universal Display Corporation
    Inventors: Raymond Kwong, David Knowles, Bin Ma, Xiao-Chang Li, William Ceyrolles
  • Patent number: 7636227
    Abstract: A circuit for providing over-current protection, the circuit including a gate driver circuit for controlling a bridge circuit including a half bridge stage having high and low switches. The circuit includes a feedback loop circuit for counting over-current indicators sensed during one or more consecutive PWM cycles; wherein when an over-current indicator is sensed, the low switch is turned OFF for duration of a first time period after which the low switch is turned back ON, to enable determination of an over-current condition where false noise signals are rejected thereby preventing circuit shutdowns due to false over-current condition.
    Type: Grant
    Filed: April 18, 2007
    Date of Patent: December 22, 2009
    Assignee: International Rectifier Corporation
    Inventors: Xiao-chang Cheng, Jun Honda, Gabriele Bernardinis
  • Publication number: 20090260670
    Abstract: Copper indium diselenide, copper indium gallium diselenide, and other IB-IIIA-VIA compounds are produced by the liquid deposition on a substrate of a precursor-containing ink, followed by heating to produce the desired material. The precursor containing ink is a mixture of three parts. The first part is plurality of particulates of metal compounds of IB, IIIA. The second part is chalcogen source of selenium, sulfur, or organic chalcogen compounds dissolved in a liquid organic solvent. The third part solution function as viscosity adjustment, as introduction of dopant of sodium ion and/or as ink stabilizer. The precursor ink can be coated on substrate at room temperature and it can be transferred into copper indium (gallium) chalcogenide semiconductor thin film upon baking and a chalcogenization process. The resulting thin film semiconducting material can be incorporated into photovoltaic and other electronic devices.
    Type: Application
    Filed: April 18, 2008
    Publication date: October 22, 2009
    Inventor: Xiao-Chang Charles Li
  • Patent number: 7548029
    Abstract: An apparatus and method for determining the output current in a bridge-connected switched transistor output circuit including high-side and low-side transistor switches, typically MOSFETS. The voltage at a common node between the high and low side switches is sensed, and offset in a first circuit by a fixed amount so that the voltage is positive for all positive or negative output currents of interest. The output current is actually determined in a second circuit which receives the offset voltage signal only predetermined times in relation to the on-time of the low side switch. The first circuit includes a current reference source/level shifter and a current mirror circuit formed of a plurality of transistors in a particular circuit configuration. The second circuit is coupled to an output of the first circuit by a gated NMOS transistor at the desired times to provide the current measurement signal.
    Type: Grant
    Filed: June 2, 2005
    Date of Patent: June 16, 2009
    Assignee: International Rectifier Corporation
    Inventors: Xiao-Chang Cheng, Jun Honda, Dana Wilhelm
  • Patent number: 7528651
    Abstract: An integrated noise isolation circuit on a single silicon substrate die having a structural arrangement that minimizes noise. The integrated circuit including a noise sensitive circuit including an input stage; a noise generating circuit including an output stage; at least one high voltage level shift circuit coupling the noise generating and noise sensitive circuits for transferring a signal from the input to the output stage; and at least one floating structure for isolating influence of the noise.
    Type: Grant
    Filed: May 7, 2007
    Date of Patent: May 5, 2009
    Assignee: International Rectifier Corporation
    Inventors: Jun Honda, Xiao-chang Cheng
  • Patent number: 7365141
    Abstract: Optical devices fabricated from solvent processible polymers suffer from susceptibility to solvents and morphological changes. A semiconductive polymer capable of luminescence in an optical device is provided. The polymer comprises a luminescent film-forming solvent processible polymer which contains cross-linking so as to increase its molar mass and to resist solvent dissolution, the cross-linking being such that the polymer retains semiconductive and luminescent properties.
    Type: Grant
    Filed: March 13, 2006
    Date of Patent: April 29, 2008
    Assignee: Cambridge Display Technology Ltd.
    Inventors: Andrew Bruce Holmes, Xiao-Chang Li, Stephen Carl Moratti, Kenneth Andrew Murray, Richard Henry Friend
  • Publication number: 20080042710
    Abstract: A method for providing a soft start operation for a transistor driver circuit, comprising providing a saw tooth waveform from an oscillator at a given frequency; comparing the saw tooth waveform to a reference value; and modifying the saw tooth waveform as a result of the comparison to produce pulses of increased length when the reference value is below a value of the saw tooth waveform.
    Type: Application
    Filed: October 23, 2007
    Publication date: February 21, 2008
    Applicant: INTERNATIONAL RECTIFIER CORPORATION
    Inventors: Xiao-chang Cheng, Edgar Abdoulin
  • Patent number: 7307462
    Abstract: A driver circuit for a transistor provides a soft start feature where pulses provided to the transistor are varied in duration during startup. The driver also provides an overcurrent protection feature for disabling a driver output for a safe period of time when an overcurrent condition is detected. The driver circuit includes an oscillator that produces a saw tooth wave and a narrow width pulse train for determining pulse width and dead time, respectively. The driver circuit may be used in half-bridge or full-bridge drivers.
    Type: Grant
    Filed: April 26, 2004
    Date of Patent: December 11, 2007
    Assignee: International Rectifier Corporation
    Inventors: Xiao-chang Cheng, Edgar Abdoulin