Patents by Inventor Jyun-Sian LEE

Jyun-Sian LEE 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 manufacturing terephthalic acid
    Patent number: 10968159
    Abstract: Method for manufacturing terephthalic acid includes following steps: providing a titrant receptor solution, the titrant receptor solution being water; adding disodium terephthalate aqueous solution and an acid titrant into the titrant receptor solution to form terephthalic acid crystals and an end-point solution, and separating the terephthalic acid crystals from the end-point solution.
    Type: Grant
    Filed: March 26, 2020
    Date of Patent: April 6, 2021
    Assignee: FAR EASTERN NEW CENTURY CORPORATION
    Inventors: Po-Chen Lai, Jyun-Sian Lee, Sih-Hao Chiang, Chin-Shui Liang, Hsiang-Chin Tsai
  • METHOD FOR MANUFACTURING TEREPHTHALIC ACID
    Publication number: 20210094898
    Abstract: Method for manufacturing terephthalic acid includes following steps: providing a titrant receptor solution, the titrant receptor solution being water; adding disodium terephthalate aqueous solution and an acid titrant into the titrant receptor solution to form terephthalic acid crystals and an end-point solution, and separating the terephthalic acid crystals from the end-point solution.
    Type: Application
    Filed: March 26, 2020
    Publication date: April 1, 2021
    Inventors: Po-Chen Lai, Jyun-Sian Lee, Sih-Hao Chiang, Chin-Shui Liang, Hsiang-Chin Tsai
  • Method for manufacturing terephthalic acid and system thereof
    Patent number: 10604634
    Abstract: A method for manufacturing terephthalic acid includes the following operations: providing a raw material, in which the raw material includes a first raw material including polyethylene terephthalate; performing a depolymerization reaction on the first raw material to form a depolymerization product, in which the depolymerization product includes disodium terephthalate; performing a decolorization process on the disodium terephthalate to form decolorized disodium terephthalate and precipitated sludge; separating the decolorized disodium terephthalate and the sludge; and forming terephthalic acid from the decolorized disodium terephthalate after separating the decolorized disodium terephthalate and the sludge.
    Type: Grant
    Filed: January 23, 2019
    Date of Patent: March 31, 2020
    Assignee: Far Eastern New Century Corporation
    Inventors: Po-Chen Lai, Jyun-Sian Lee, Sih-Hao Chiang, Chin-Shui Liang, Hsiang-Chin Tsai
  • METHOD FOR MANUFACTURING TEREPHTHALIC ACID AND SYSTEM THEREOF
    Publication number: 20200095394
    Abstract: A method for manufacturing terephthalic acid includes the following operations: providing a raw material, in which the raw material includes a first raw material including polyethylene terephthalate; performing a depolymerization reaction on the first raw material to form a depolymerization product, in which the depolymerization product includes disodium terephthalate; performing a decolorization process on the disodium terephthalate to form decolorized disodium terephthalate and precipitated sludge; separating the decolorized disodium terephthalate and the sludge; and forming terephthalic acid from the decolorized disodium terephthalate after separating the decolorized disodium terephthalate and the sludge.
    Type: Application
    Filed: January 23, 2019
    Publication date: March 26, 2020
    Inventors: Po-Chen LAI, Jyun-Sian LEE, Sih-Hao CHIANG, Chin-Shui LIANG, Hsiang-Chin TSAI