Patents by Inventor Qianhui ZHANG

Qianhui ZHANG 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).

  • HIGH-STRENGTH AND HIGH-HEAT-RESISTANT BIO-BASED POLYAMIDE COMPOSITION AND PREPARATION METHOD THEREOF
    Publication number: 20240093030
    Abstract: The present invention provides a high-strength and high-heat-resistant bio-based polyamide composition, which consists of the following parts of materials by mass: 43.50-89.95% of bio-based polyamide resin slices; 10-50% of reinforcements; 0.01-2% of rare earth compounds; 0.01-1% of copper salt antioxidant combinations; 0.01-1% of free-radical scavengers; 0.01-0.5% of heat-conducting masterbatches; 0.01-1% of stabilizers; and 0-1% of dispersants. The advantage of the present invention is presented in that: the bio-based polyamide resin slice is prepared through a stepwise polycondensation process of pentanediamine and adipic acid, or through a stepwise polycondensation process of pentanediamine, adipic acid and terephthalic acid and the pentanediamine is prepared through fermentation of starch, so the prepared polyamide resin pertains to an environmentally-friendly engineering plastic.
    Type: Application
    Filed: December 28, 2021
    Publication date: March 21, 2024
    Applicants: SHANGHAI PRET COMPOSITES CO., LTD., ZHEJIANG PRET ADVANCED MATERIALS CO., LTD., CHONGQING PRET NEW MATERIALS CO., LTD., SHANGHAI PRET CHEMICAL NEW MATERIALS CO., LTD
    Inventors: Haisheng ZHANG, Jianrui CHEN, Yi WANG, Ruixiang YAN, Ying CAI, Bing ZHOU, Meiling XU, Qianhui ZHANG, Qing CAI, Guoyi DU, Tinglong YAN, Wen ZHOU
  • Method and device for testing battery equalization circuit
    Patent number: 10877099
    Abstract: Disclosed are a device and a method for testing a battery equalization circuit.
    Type: Grant
    Filed: October 26, 2016
    Date of Patent: December 29, 2020
    Assignee: BEIJING ELECTRIC VEHICLE CO., LTD.
    Inventors: Qianhui Zhang, Liguo Yan, Xingquan Qin, Zhongke Yang, Huigen Yu, Donglin Cao, Rui Liang, Dangqing Li, Zhiqiang Guo
  • METHOD AND DEVICE FOR TESTING BATTERY EQUALIZATION CIRCUIT
    Publication number: 20180313898
    Abstract: Disclosed are a device and a method for testing a battery equalization circuit.
    Type: Application
    Filed: October 26, 2016
    Publication date: November 1, 2018
    Inventors: Qianhui ZHANG, Liguo YAN, Xingquan QIN, Zhongke YANG, Huigen YU, Donglin CAO, Rui LIANG, Dangqing LI, Zhiqiang GUO