Patents by Inventor Chen Duan

Chen Duan 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: 11708368
    Abstract: The present invention provides a crystalline form of a benzodiazepine derivative hydrochloride of Formula I or its ethanolate, wherein R is methyl or ethyl. The present invention also provides a method of preparing the crystal form of the compound of Formula I and a pharmaceutical composition comprising the crystal form.
    Type: Grant
    Filed: February 13, 2019
    Date of Patent: July 25, 2023
    Assignee: JIANGSU NHWALUOKANG PHARMACEUTICAL RESEARCH AND DEVELOPMENT CO., LTD.
    Inventors: Qingeng Li, Chen Duan, Tao Wang, Jian Liao, Changwen Li, Chao Hao
  • Publication number: 20210002283
    Abstract: The present invention provides a crystalline form of a benzodiazepine derivative hydrochloride of Formula I or its ethanolate, wherein R is methyl or ethyl. The present invention also provides a method of preparing the crystal form of the compound of Formula I and a pharmaceutical composition comprising the crystal form.
    Type: Application
    Filed: February 13, 2019
    Publication date: January 7, 2021
    Inventors: Qingeng Li, Chen Duan, Tao Wang, Jian Liao, Changwen LI, Chao Hao
  • Publication number: 20190322193
    Abstract: A battery module balancing system in a vehicle having a powertrain system includes a battery pack having at least one battery module, an electric generator for generating and providing a second voltage, a low voltage battery for storing or providing a first voltage and a controller being operable to balance a state-of-charge (SOC) in the battery module. The battery pack including the battery module has an energy for providing power to the powertrain system of the vehicle. In the battery balancing system, the controller determines to charge or discharge the battery module for balancing the SOC in each battery module based on each mode of the balancing system.
    Type: Application
    Filed: April 19, 2019
    Publication date: October 24, 2019
    Inventors: Chen Duan, Caisheng Wang
  • Patent number: 9315166
    Abstract: Techniques are presented for synchronous rectification control (SRC) of a DC-DC converter in an electrified vehicle (EV) can include determining a required output current for the DC-DC converter based on a secondary voltage of a secondary battery system of the EV, the DC-DC converter being configured to convert a primary voltage from a primary battery system of the EV to the secondary voltage. The techniques can include determining, at the controller, a switching frequency for the DC-DC converter that causes the DC-DC converter to output the required output current. The techniques can include determining turn-on and turn-off delays of the DC-DC converter based on the required output current and the switching frequency using one or more look-up tables. The techniques can also include controlling the DC-DC converter efficiency based on the turn-on and turn-off delays.
    Type: Grant
    Filed: July 3, 2014
    Date of Patent: April 19, 2016
    Assignees: FCA US LLC, Kettering University
    Inventors: Zhong Nie, Mengyang Zhang, Dennis Krozek, Fred A Householder, Hua Bai, Wei Guo, Chen Duan
  • Publication number: 20150019055
    Abstract: Techniques are presented for synchronous rectification control (SRC) of a DC-DC converter in an electrified vehicle (EV) can include determining a required output current for the DC-DC converter based on a secondary voltage of a secondary battery system of the EV, the DC-DC converter being configured to convert a primary voltage from a primary battery system of the EV to the secondary voltage. The techniques can include determining, at the controller, a switching frequency for the DC-DC converter that causes the DC-DC converter to output the required output current. The techniques can include determining turn-on and turn-off delays of the DC-DC converter based on the required output current and the switching frequency using one or more look-up tables. The techniques can also include controlling the DC-DC converter efficiency based on the turn-on and turn-off delays.
    Type: Application
    Filed: July 3, 2014
    Publication date: January 15, 2015
    Inventors: Zhong Nie, Mengyang Zhang, Dennis Krozek, Fred A. Householder, Hua Bai, Wei Guo, Chen Duan