Patents by Inventor Shanshan CHANG

Shanshan 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).

  • Compact and flat bismuth metal preparation by electrolysis method
    Patent number: 11913128
    Abstract: A method for compact and flat bismuth metal preparation by electrolysis is provided. In the method, one or more of ?-naphthol, acacia, sulfonated and vulcanized alkylphenol ethoxylate and naphthol ethoxylate oxides are added to the acidic solution of bismuth methanesulfonate as additives, and the cathodic bismuth is obtained by electrolysis at 20-80° C. The method for bismuth metal preparation is simple and easy to promote, environment-friendly, and the obtained bismuth metal has a flat and compact surface and good plate formation effect.
    Type: Grant
    Filed: January 5, 2022
    Date of Patent: February 27, 2024
    Assignee: CENTRAL SOUTH UNIVERSITY
    Inventors: Yongming Chen, Shanshan Liu, Henghui Wang, Shenghai Yang, Cong Chang, Changliu Xiang, Changhong Wang, Tao Luo, Jie Dai
  • ASSEMBLED BAMBOO SLEEPER AND PREPARATION METHOD THEREOF
    Publication number: 20220098799
    Abstract: The present invention discloses an assembled bamboo sleeper, which is obtained by using a bamboo unit as a raw material, dried and modified at the temperature of 110-180° C., undergone coating treatment using a dopamine solution, adhesive dipping, curing and solidifying, assembling and gluing, further solidifying, further treatment using a dopamine solution, and anti-mildew and/or anti-corrosion and/or anti-insect treatment, and then fastened. The present invention further provides a preparation method for the foregoing bamboo sleeper. The bamboo sleeper prepared in the present invention is green and environmentally friendly, and applicable for ballasted tracks of railways and urban rail transit systems.
    Type: Application
    Filed: April 18, 2019
    Publication date: March 31, 2022
    Applicant: HUNAN TAOHUAJIANG BAMBOO SCIENCE & TECHNOLOGY CO., LTD.
    Inventors: Jinbo HU, Jian PENG, Weihong ZENG, Yanhui XIONG, Diqin LIU, Zhicheng XUE, Xianjun LI, Zhiping WU, Shanshan CHANG, Gonggang LIU, Ting LI
  • ONE-STEP INTEGRALLY-FORMED BAMBOO SLEEPER AND PREPARATION METHOD THEREOF
    Publication number: 20220081848
    Abstract: The present invention discloses a one-step integrally-formed bamboo sleeper. For the one-step integrally-formed bamboo sleeper, a bamboo unit is used as a raw material, to be dried and modified at the temperature of 110-180° C., and then subject to adhesive dipping, adhesive throwing, solidification, dopamine solution treatment, anti-mildew and/or anti-corrosion and/or anti-insect treatment, and fastening, to obtain the one-step integrally-formed bamboo sleeper with a density of 0.9-1.5 g/cm3. The present invention further provides a preparation method for the foregoing bamboo sleeper. The bamboo sleeper prepared in the present invention has a suitable elastic modulus, and applicable for ballasted tracks of railways and urban rail transit systems.
    Type: Application
    Filed: April 18, 2019
    Publication date: March 17, 2022
    Applicant: HUNAN TAOHUAJIANG BAMBOO SCIENCE & TECHNOLOGY CO., LTD.
    Inventors: Jinbo HU, Jian PENG, Weihong ZENG, Yanhui XIONG, Diqin LIU, Zhicheng XUE, Xianjun LI, Zhiping WU, Shanshan CHANG, Gonggang LIU, Ting LI