Patents by Inventor Shi Gao

Shi Gao 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).

  • Textile separation methods
    Patent number: 12173440
    Abstract: Provided herein is a method of separating spandex from textile blends using biosolvents. The recovered material is of high purity while the chemical structure and molecular weight remain substantially unaffected by the treatment.
    Type: Grant
    Filed: September 24, 2021
    Date of Patent: December 24, 2024
    Assignee: The Hong Kong Research Institute of Textiles and Apparel Limited
    Inventors: Edwin Yee Man Keh, Lei Yao, Alex Chan, Un Teng Lam, Shi Gao
  • TEXTILE SEPARATION METHODS
    Publication number: 20230147533
    Abstract: Provided herein is a method of separating spandex from textile blends using biosolvents. The recovered material is of high purity while the chemical structure and molecular weight remain substantially unaffected by the treatment.
    Type: Application
    Filed: September 24, 2021
    Publication date: May 11, 2023
    Inventors: Edwin Yee Man Keh, Lei YAO, Alex CHAN, Un Teng LAM, Shi GAO
  • Preparation method of amphoteric two-dimensional nanosheet
    Patent number: 11279621
    Abstract: An amphoteric two-dimensional nanosheet and a preparation method thereof are provided. The amphoteric two-dimensional nanosheet is prepared by the following steps: uniformly dispersing few-layered graphene oxide into toluene and then adding alkylamine coupling agent to a mixture of the few-layered graphite oxide and the toluene for reaction; amine terminated graphite oxide dispersion that has been prepared is fully dispersed in toluene-dimethylformamide mixed solvent, and then, alkyl glycidyl ether is added into the above solution for reaction, so as to obtain the amphoteric two-dimensional nanosheet.
    Type: Grant
    Filed: August 23, 2021
    Date of Patent: March 22, 2022
    Assignee: Southwest Petroleum University
    Inventors: Rui Liu, Shi Gao, Wanfen Pu, Xing Zhao, Lin Sun, Daijun Du, Yingxue Xu
  • Magnetic writing screen dispersion medium
    Patent number: 6878306
    Abstract: A magnetic dispersion medium is used in a magnetic writing screen toy. The dispersion medium is attracted to the underside of the screen when a magnetic tipped pen is passed over the upper surface of the screen. A user can create drawings and figures. The dispersion medium is non-toxic, creates lines having good contrast and can be easily erased without permanently forming black marks on the screen. The dispersion medium works well in temperature ranges between ?20° C. to 45° C.
    Type: Grant
    Filed: August 24, 2001
    Date of Patent: April 12, 2005
    Assignee: Tsuen Lee Metals & Plastic Toys Co., Ltd.
    Inventor: Tao Shi Gao
  • Magnetic writing screen dispersion medium
    Publication number: 20020166991
    Abstract: A magnetic dispersion medium is used in a magnetic writing screen toy. The dispersion medium is attracted to the underside of the screen when a magnetic tipped pen is passed over the upper surface of the screen. A user can create drawings and figures. The dispersion medium is non-toxic, creates lines having good contrast and can be easily erased without permanently forming black marks on the screen. The dispersion medium works well in temperature ranges between −20° C. to 45° C.
    Type: Application
    Filed: August 24, 2001
    Publication date: November 14, 2002
    Inventor: Tao Shi Gao