Patents by Inventor Cheng Wan

Cheng Wan 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).

  • Styrene-isoprene/butadiene diblock copolymer, hydrogenated block copolymer, composition formed therefrom, and the use thereof
    Patent number: 12146049
    Abstract: A styrene-isoprene/butadiene diblock copolymer contains a polystyrene block and a polyisoprene/butadiene block. Based on 100 wt % of the styrene-isoprene/butadiene diblock copolymer, the polystyrene block is 20-45 wt %, and the polyisoprene/butadiene block is 55-80 wt %. The polyisoprene/butadiene block has a polyisoprene unit and a polybutadiene unit. The weight ratio of the polyisoprene unit to the polybutadiene unit is 8:2 to 2:8.
    Type: Grant
    Filed: April 5, 2022
    Date of Patent: November 19, 2024
    Assignee: LCY CHEMICAL CORP.
    Inventors: Yi-Cheng Wan, Chen-Yu Wang
  • Systems and Methods for Detecting Real-time Issues in Guest-Host Messages Using Machine Learning Models
    Publication number: 20240346454
    Abstract: There is provided a method that is performed while a host and a guest are using a conversational messaging interface. For a message thread, in response to receiving a guest message, the method computes a probability for guest issues by inputting feature vectors from the guest message to a guest issue detection model. In response to receiving a host message, the message computes a probability for host issues by inputting feature vectors from the host message to a host issue detection model. If the message thread includes particular keywords, and if the probability for the guest issues is above a guest issue predetermined threshold, the method includes providing alerts that is visible only to the guest. If the probability for the host issues is above a host issue predetermined threshold, the method also includes providing alerts that is visible only to the host.
    Type: Application
    Filed: April 12, 2024
    Publication date: October 17, 2024
    Inventors: Zach Barbitta, Morris Chuang, Ying Lyu, Mia Zhao, Lianghao Li, Cheng Wan, Brian Wang, Jordan Yeager, Kelvin Xiong, Joy Zhang, Yinglu Shao, Shuqi Sun
  • Nonaqueous Electrochemical Battery Containing A Sealing Member
    Publication number: 20240283067
    Abstract: A nonaqueous electrochemical battery is provided. The battery comprises a housing containing an interior space extending to an open end, as well as positive electrode, negative electrode, separator, and electrolyte disposed within the interior space of the housing. A sealing member is disposed adjacent to the open end of the housing, wherein the sealing member comprises a polymer composition that contains a polyarylene sulfide and a bifunctional polymer that contains an epoxide functional group and a (meth)acrylate functional group. The polymer composition has an epoxy content of from about 0.3 to about 2 parts by weight per 100 parts by weight of polyarylene sulfides in the polymer composition.
    Type: Application
    Filed: January 29, 2024
    Publication date: August 22, 2024
    Inventors: Zhe Tan, Cheng Wan, Jinhui Huang, Fangfang Tao
  • ON-BOARD CHARGER CONTROL SYSTEM AND METHOD
    Publication number: 20240217358
    Abstract: The disclosure provides an on-board charger control system and method.
    Type: Application
    Filed: December 29, 2023
    Publication date: July 4, 2024
    Inventors: Cheng Wan, Lewei Qian, Dengming Peng, Fei Chen, Haibo Qiao, Jianlei Yi, Pengtao Zhao
  • ISOLATED BI-DIRECTIONAL DC CONVERSION CIRCUIT AND METHOD FOR CONTROLLING THE SAME
    Publication number: 20240213884
    Abstract: An isolated bi-directional DC conversion circuit and a method for controlling the same are provided. The DC conversion circuit includes a transformer with a first energy storage element and a primary-side rectification bridge coupled to the primary side of the transformer and a second energy storage element and a secondary-side rectification bridge coupled to the secondary side of the transformer. The primary-side rectification bridge consists of multiple first power switching devices. The secondary-side rectification bridge consists of multiple second power switching devices. Each of the multiple first and the second power switching devices have a body diode in inverse parallel connection therewith.
    Type: Application
    Filed: December 21, 2023
    Publication date: June 27, 2024
    Inventors: Cheng Wan, Lewei Qian, Dengming Peng, Fei Chen, Haibo Qiao, Jianlei Yi, Pengtao Zhao
  • Harvesting ringing energy using a bootstrap circuit
    Patent number: 11711007
    Abstract: An apparatus is disclosed for harvesting ringing energy. In an example aspect, the apparatus includes a bootstrap circuit. The bootstrap circuit includes a bootstrap capacitor and a bootstrap switch. The bootstrap switch includes a first terminal configured to accept an input voltage. The bootstrap switch also includes a second terminal coupled to the bootstrap capacitor. The bootstrap switch additionally includes a body diode comprising an anode coupled to the first terminal and a cathode coupled to the second terminal. The bootstrap switch is configured to be in an open state to charge the bootstrap capacitor via the body diode. The bootstrap switch is also configured to provide a voltage at the second terminal of the bootstrap switch. The voltage is greater than an average of the input voltage.
    Type: Grant
    Filed: May 10, 2021
    Date of Patent: July 25, 2023
    Assignee: QUALCOMM Incorporated
    Inventors: Troy Lynn Stockstad, Yi-Cheng Wan, Marko Koski, Ajay Kumar Kosaraju
  • Harvesting Ringing Energy
    Publication number: 20220360159
    Abstract: An apparatus is disclosed for harvesting ringing energy. In an example aspect, the apparatus includes a bootstrap circuit. The bootstrap circuit includes a bootstrap capacitor and a bootstrap switch. The bootstrap switch includes a first terminal configured to accept an input voltage. The bootstrap switch also includes a second terminal coupled to the bootstrap capacitor. The bootstrap switch additionally includes a body diode comprising an anode coupled to the first terminal and a cathode coupled to the second terminal. The bootstrap switch is configured to be in an open state to charge the bootstrap capacitor via the body diode. The bootstrap switch is also configured to provide a voltage at the second terminal of the bootstrap switch. The voltage is greater than an average of the input voltage.
    Type: Application
    Filed: May 10, 2021
    Publication date: November 10, 2022
    Inventors: Troy Lynn Stockstad, Yi-Cheng Wan, Marko Koski, Ajay Kumar Kosaraju
  • STYRENE-ISOPRENE/BUTADIENE DIBLOCK COPOLYMER, HYDROGENATED BLOCK COPOLYMER, COMPOSITION FORMED THEREFROM, AND THE USE THEREOF
    Publication number: 20220332937
    Abstract: A styrene-isoprene/butadiene diblock copolymer contains a polystyrene block and a polyisoprene/butadiene block. Based on 100 wt % of the styrene-isoprene/butadiene diblock copolymer, the polystyrene block is 20-45 wt %, and the polyisoprene/butadiene block is 55-80 wt %. The polyisoprene/butadiene block has a polyisoprene unit and a polybutadiene unit. The weight ratio of the polyisoprene unit to the polybutadiene unit is 8:2 to 2:8.
    Type: Application
    Filed: April 5, 2022
    Publication date: October 20, 2022
    Inventors: Yi-Cheng WAN, Chen-Yu WANG
  • CONTACTOR DAMAGE AND DIAGNOSTICS
    Publication number: 20220337070
    Abstract: A method includes interpreting a contactor open event and a contactor load value for a contactor positioned on a motive power circuit for a mobile application, determining that a contactor opening event under load has occurred in response to the contactor open event and the contactor load value, and updating a contactor wear condition in response to the contactor opening event under load, wherein updating the contactor wear condition comprises accumulating a number of the contactor opening events under load.
    Type: Application
    Filed: May 5, 2022
    Publication date: October 20, 2022
    Inventors: Justin Keith Griffiths, Nilesh Surase, Ritika Shetty, Shalini Tripathy, Somdut Dey, Madhavi Gupta, Mayura Madane, Sadiya Qureshi, Toseed Khan, Amit Chavan, Kumar Prasad Telikepalli, Atul Solvande, Hao Wang, Jiong Chen, Yueyue Deng, Jason Carroll, Srinivasan Arjun Tekalur, Jacob William Green, Ashok Chakravarthi Kandru, Cheng Luo, Tianyang Jiang, Cheng Wan, Ye Zhu, John Trublowski, Robert Stephen Douglass, Rajen Modi, Nilay Mehta, Laura Natali Valencia Fritsch, Han Li, Dongxin JIn, Lewei Qian, Jun Li, Hongrae Kim, Daniel R. Ouwenga, Patrick Herranz, Miroslav Horejs, Rohit Baranwal, Zhe Zhang, Martin Wayne Mensch, Brandon William Fisher, Austin Robert Zurface, Jeff Howard Urian, James David, Bharath Kumar Suda, Asheesh Kumar Soni, Rene Guy Gallet, Michael Scott Sullivan, Karsten Gerving, Guido Völlmar, Gerd Schmitz, Christoph Bausch, Ute Molitor, Lutz Friedrichsen, Kai Schroeder, Julia Otte, Madeline Philipsohn, Norbert Roesner, Volker Lang, Johannes Meissner, Paolo D'Amico, Jalpa Shah, Meng Wang, Damrongrit Piyabongkarn, Niles Stephen Ramseyer, Dennis Dukaric, Matt Haylock, Anvaya R. Hingangave, Devendra Patil
  • METHOD AND APPARATUS FOR BUILDING EXTRACTION, AND STORAGE MEDIUM
    Publication number: 20210240983
    Abstract: A method and an apparatus for building extraction, and a storage medium are provided in the present disclosure. The method includes: obtaining remote sensing image data and user behavior associated data of a target area, in which the user behavior associated data and the remote sensing image data have a spatiotemporal correlation; generating new channel data according to the user behavior associated data and the remote sensing image data and extracting a building in the target area according to the remote sensing image data and the new channel data.
    Type: Application
    Filed: April 21, 2021
    Publication date: August 5, 2021
    Applicant: BEIJING BAIDU NETCOM SCIENCE AND TECHNOLOGY CO., LTD.
    Inventors: Jidong Peng, Cheng Wan, Cheng Chen, Shilei Wen, Ke Sun, Chengliang Luo
  • System and method for log metadata automatic recovery on dual controller storage system
    Patent number: 10997031
    Abstract: A method, computer program product, and computer system for executing an automatic recovery of log metadata. A secondary storage processor may request one or more log metadata buffer values from a first buffer used by a primary storage processor. The secondary storage processor may update one or more log metadata buffer values from a second buffer used by the secondary storage processor.
    Type: Grant
    Filed: January 31, 2019
    Date of Patent: May 4, 2021
    Assignee: EMC IP Holding Company LLC
    Inventors: Cheng Wan, Socheavy D. Heng, Xinlei Xu, Yousheng Liu, Baote Zhuo
  • POWER DISTRIBUTION AND CIRCUIT PROTECTION FOR A MOBILE APPLICATION HAVING A HIGH EFFICIENCY INVERTER
    Publication number: 20200274375
    Abstract: A power electronics assembly for a mobile application includes a first power electronics component selectively coupled to a high source on a first side and coupled to a high voltage battery on a second side, a second power electronics component selectively coupled to one of a low load or a low voltage battery on a first side and coupled to the high voltage battery on a second side; and a controller, including an operating mode circuit structured to determine a discharge operating mode for the mobile application, a power electronics configuration circuit structured to provide a switch state value for the first power electronics component and the second power electronics component in response to the discharge operating mode, and wherein the first power electronics component and the second power electronics component are responsive to the switch state value to coupled selected ones of the high source, low load, and low voltage battery to the high voltage battery.
    Type: Application
    Filed: March 23, 2020
    Publication date: August 27, 2020
    Inventors: Justin Keith Griffiths, Nilesh Surase, Ritika Shetty, Shalini Tripathy, Somdut Dey, Madhavi Gupta, Mayura Madane, Sadiya Qureshi, Toseed Khan, Amit Chavan, Kumar Prasad Telikepalli, Atul Solvande, Hao Wang, Jiong Chen, Yueyue Deng, Jason Carroll, Srinivasan Arjun Tekalur, Jacob William Green, Chakravarthi Kandru, Cheng Luo, Tianyang Jiang, Cheng Wan, Ye Zhu, John Trublowski, Robert Stephen Douglass, Rajen Modi, Nilay Mehta, Laura Natali Valencia Fritsch, Han Li, Dongxin Jin, Lewei Qian, Jun Li, Hongrae Kim, Daniel R. Ouwenga, Patrick Herranz, Miroslav Horejs, Rohit Baranwal, Zhe Zhang, Martin Wayne Mensch, Brandon William Fisher, Austin Robert Zurface, Jeff Howard Urian, James David, Bharath Kumar Suda, Asheesh Kumar Soni, Rene Guy Gallet, Michael Scott Sullivan, Karsten Gerving, Guido Völlmar, Gerd Schmitz, Christoph Bausch, Ute Molitor, Lutz Friedrichsen, Kai Schroeder, Julia Otte, Madeline Philipsohn, Norbert Roesner, Volker Lang, Johannes Meissner, Paolo D'Amico, Jalpa Shah, Meng Wang, Damrongrit Piyabongkarn, Niles Stephen Ramseyer, Dennis Dukaric, Matt Haylock, Anvaya R. Hingangave, Devendra Patil
  • SYSTEM AND METHOD FOR LOG METADATA AUTOMATIC RECOVERY ON DUAL CONTROLLER STORAGE SYSTEM
    Publication number: 20200250041
    Abstract: A method, computer program product, and computer system for executing an automatic recovery of log metadata. A secondary storage processor may request one or more log metadata buffer values from a first buffer used by a primary storage processor. The secondary storage processor may update one or more log metadata buffer values from a second buffer used by the secondary storage processor.
    Type: Application
    Filed: January 31, 2019
    Publication date: August 6, 2020
    Inventors: Cheng Wan, Socheavy D. Heng, Xinlei Xu, Yousheng Liu, Baote Zhuo
  • Performance of deduplication storage systems
    Patent number: 10719256
    Abstract: Disclosed herein are methods, systems, and processes to improve backup and restore performance in deduplication storage environments. A metadata stream that includes data segment offsets that are associated with data segments of a previous backup image and indicate data segment boundaries is received. An offset for an include operation is determined. The include operation references one or more data segments, and is part of a request to perform a backup operation. The backup operation is performed by modifying the include operation, if the offset involves one or more partial data segments.
    Type: Grant
    Filed: December 30, 2016
    Date of Patent: July 21, 2020
    Assignee: Veritas Technologies LLC
    Inventors: Lei Zhang, Peng Zhang, Tao Liu, Cheng Wan, Cheng Hai Zhu, Guang Yang
  • Polyimide polymer and polyimide film
    Patent number: 10246556
    Abstract: A polyimide polymer is provided. The polyimide polymer includes a repeating unit represented by formula 1.
    Type: Grant
    Filed: August 16, 2017
    Date of Patent: April 2, 2019
    Assignee: TAIFLEX Scientific Co., Ltd.
    Inventors: Ching-Hung Huang, Kuang-Ting Hsueh, Chiu-Feng Chen, Yi-Kai Fang, Chun-Cheng Wan
  • POLYIMIDE POLYMER AND POLYIMIDE FILM
    Publication number: 20180371170
    Abstract: A polyimide polymer is provided. The polyimide polymer includes a repeating unit represented by formula 1.
    Type: Application
    Filed: August 16, 2017
    Publication date: December 27, 2018
    Applicant: TAIFLEX Scientific Co., Ltd.
    Inventors: Ching-Hung Huang, Kuang-Ting Hsueh, Chiu-Feng Chen, Yi-Kai Fang, Chun-Cheng Wan
  • Duty cycle estimator for a switch mode power supply
    Patent number: 10148174
    Abstract: A duty cycle estimation circuit includes a latch circuit that receives a clock signal for a voltage regulator. The latch circuit outputs a duty cycle estimate. The duty cycle estimation circuit also includes a low pass filter coupled to an output of the latch circuit to receive the duty cycle estimate. The duty cycle estimation circuit further includes a comparator that receives, as input, an output of the low pass filter and a voltage regulator output. The comparator feeds back a feedback signal to the latch circuit.
    Type: Grant
    Filed: November 10, 2016
    Date of Patent: December 4, 2018
    Assignee: QUALCOMM Incorporated
    Inventors: Ajay Kumar Kosaraju, Guolei Yu, Yi-Cheng Wan, Sugato Mukherjee
  • Systems and methods for retrieving data
    Patent number: 9805047
    Abstract: A disclosed computer-implemented method for retrieving data may include (1) receiving a request to retrieve data segments from a storage system that stores data segments in a plurality of data containers, (2) obtaining, for each data segment, information that indicates which data container stores the data segment, (3) determining, based on the information that indicates which data container stores each data segment, that using an initial access order to retrieve the data segments would result in visiting one or more data containers more than one time, (4) rearranging access to one or more data segments such that retrieving the data segments results in visiting the data containers at least one fewer times than using the initial access order, and (5) retrieving the data segments from the storage system based on the rearranged access order. Various other methods, systems, and computer-readable media are also disclosed.
    Type: Grant
    Filed: May 21, 2014
    Date of Patent: October 31, 2017
    Assignee: Veritas Technologies LLC
    Inventors: Lei Hu Zhang, Cheng Wan
  • DUTY CYCLE ESTIMATOR
    Publication number: 20170279352
    Abstract: A duty cycle estimation circuit includes a latch circuit that receives a clock signal for a voltage regulator. The latch circuit outputs a duty cycle estimate. The duty cycle estimation circuit also includes a low pass filter coupled to an output of the latch circuit to receive the duty cycle estimate. The duty cycle estimation circuit further includes a comparator that receives, as input, an output of the low pass filter and a voltage regulator output. The comparator feeds back a feedback signal to the latch circuit.
    Type: Application
    Filed: November 10, 2016
    Publication date: September 28, 2017
    Inventors: Ajay Kumar KOSARAJU, Guolei YU, Yi-Cheng WAN, Sugato MUKHERJEE
  • Control circuit and method for providing a signal for a PWM voltage regulator to convert an input voltage into an output voltage
    Patent number: 8917072
    Abstract: A control circuit and method for a PWM voltage regulator combine a high frequency feedback technique with a constant on-time or constant off-time topology to improve the transient performance of the PWM voltage regulator. The PWM voltage regulator generates a constant on-time or constant off-time depending on a current for generating a PWM signal, and dynamically adjusts the current according to the droop-voltage at its output during a transient period. Therefore, the PWM voltage regulator boosts its transient response without any threshold for load step detection.
    Type: Grant
    Filed: June 1, 2012
    Date of Patent: December 23, 2014
    Assignee: Richtek Technology Corp.
    Inventors: Yi-Cheng Wan, Jian-Rong Huang, Wen-Wei Chen