Patents by Inventor Lee Ying YU

Lee Ying YU 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: 11802370
    Abstract: A method for decolorizing a dyed textile comprising a synthetic fiber and a disperse dye, the method includes contacting the dyed textile with a super critical fluid thereby extracting at least a portion of the disperse dye from the textile into the super critical fluid and forming an at least partially decolorized textile.
    Type: Grant
    Filed: February 24, 2021
    Date of Patent: October 31, 2023
    Assignee: The Hong Kong Research Institute of Textiles and Apparel Limited
    Inventors: Edwin Yee Man Keh, Lei Yao, Hok Chung Chan, Sai Lung Fung, Un Teng Lam, Lap Hung Chan, Lee Ying Yu
  • Publication number: 20220267949
    Abstract: A method for decolorizing a dyed textile comprising a synthetic fiber and a disperse dye, the method includes contacting the dyed textile with a super critical fluid thereby extracting at least a portion of the disperse dye from the textile into the super critical fluid and forming an at least partially decolorized textile.
    Type: Application
    Filed: February 24, 2021
    Publication date: August 25, 2022
    Inventors: Edwin Yee Man KEH, Lei YAO, Hok Chung CHAN, Sai Lung FUNG, Un Teng LAM, Lap Hung CHAN, Lee Ying YU
  • Publication number: 20220112655
    Abstract: A method and an integrated system for dyeing synthetic, natural, and blended textiles in the form of fabrics, yarns, and garments are provided. The integrated system includes a first pressurizing pump for pressurizing liquefied CO2 to supercritical CO2 (Sc—CO2); a second pressurizing pump for pressurizing CO2 to liquefied CO2; a liquefied CO2 storage vessel for storing the liquefied CO2 and the separated liquefied CO2 from the one or more cyclone separators; a heater for heating the Sc—CO2; a dyestuff vessel for mixing a dyestuff and the Sc—CO2 to obtain Sc—CO2-mixed dyestuff; a dyeing vessel for dyeing the textile by circulating the Sc—CO2 and the Sc—CO2-mixed dyestuff between the dyeing vessel and the dyestuff vessel; and one or more cyclone separators for removing the dyestuff from the Sc—CO2-mixed dyestuff to obtain separated liquefied CO2.
    Type: Application
    Filed: March 13, 2019
    Publication date: April 14, 2022
    Inventors: Edwin Yee Man KEH, Lei YAO, Alex Hok Chung CHAN, John Kin Ming LEUNG, Jason Lap Hung CHAN, Wendy Lee Ying YU