Patents by Inventor Lihuan CHENG

Lihuan CHENG 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).

  • Method for preparing taurine and method for recovering mother liquor thereof
    Patent number: 11891355
    Abstract: The present disclosure relates to a method for preparing taurine and a method for recovering a mother liquor thereof. The method for recovering the taurine mother liquor comprises: providing a taurine mother liquor, and mixing the taurine mother liquor and a treating agent to obtain a solid-containing suspension, wherein the treating agent is a water-soluble organic solvent or a mixture of the water-soluble organic solvent and water; filtering the suspension to obtain a first solid product and a first filtrate; and dissolving the first solid product with an ammonia source, and then filtering same to obtain a second solid product and a second filtrate.
    Type: Grant
    Filed: November 17, 2020
    Date of Patent: February 6, 2024
    Assignees: ZHEJIANG NHU COMPANY LTD., ZHEJIANG NHU PHARMACEUTICAL CO., LTD., SHANGYU NHU BIO-CHEM CO., LTD.
    Inventors: Xiaoxiang He, Junhua Peng, Xianghua Yao, Songhua Xu, Lihuan Cheng, Yinbing Wang, Yinjiang Song, Lei Wang
  • METHOD FOR PREPARING TAURINE AND METHOD FOR RECOVERING MOTHER LIQUOR THEREOF
    Publication number: 20220371992
    Abstract: The present disclosure relates to a method for preparing taurine and a method for recovering a mother liquor thereof. The method for recovering the taurine mother liquor comprises: providing a taurine mother liquor, and mixing the taurine mother liquor and a treating agent to obtain a solid-containing suspension, wherein the treating agent is a water-soluble organic solvent or a mixture of the water-soluble organic solvent and water; filtering the suspension to obtain a first solid product and a first filtrate; and dissolving the first solid product with an ammonia source, and then filtering same to obtain a second solid product and a second filtrate.
    Type: Application
    Filed: November 17, 2020
    Publication date: November 24, 2022
    Inventors: Xiaoxiang HE, Junhua PENG, Xianghua YAO, Songhua XU, Lihuan CHENG, Yinbing WANG, Yinjiang SONG, Lei WANG