Patents by Inventor Ka Yim YEUNG

Ka Yim YEUNG 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: 11856953
    Abstract: A launderable bactericidal and virucidal fabric finish formulation. The first component is a bactericidal and virucidal agent represented by formula (I): wherein n is 7; R1, R2, and R3 are jointly or independently selected from H or one of the following groups: wherein R4 is selected from CH3 or H; m is an integer from 2 to 10; p is an integer from 9 to 15; q is an integer from 2 to 10. A second component includes one or more crosslinkers and/or one or more catalysts. A third component includes one or more transition metal salts.
    Type: Grant
    Filed: March 11, 2022
    Date of Patent: January 2, 2024
    Assignee: Nano and Advanced Materials Institute Limited
    Inventors: Wing Nien Wylie O, Tsz Hin Yui, Chi Yin Leung, Chun Sing Leung, Ka Yim Yeung
  • Patent number: 11846066
    Abstract: The present invention provides an anti-pilling wool fabric with a coating having pilling resistance and resistance to fiber loss from fabric surface. The coating is formed by a coating formulation including at least two diisocyanates, at least two catalyst, a water dispersing agent, a buffer and water, which provides a polycarbodiimide crosslinker reactive to the relative less reactive groups on polypeptide of the wool fabric and promotes crosslinking between polypeptides of the wool fabric under relatively mild processing conditions so as to enhance mechanical strength of the wool fabric whilst no significant effect of the original finish merino wool fabric and/or garment and fiber loss from fabric surface are observed, compared to conventional treatment methods on wool fabric. A corresponding coating formulation and method of fabricating the anti-pilling wool fabric are also provided.
    Type: Grant
    Filed: August 1, 2021
    Date of Patent: December 19, 2023
    Assignee: Nano and Advanced Materials Institute Limited
    Inventors: Wing Nien Wylie O, Tsz Hin Yui, Ka Yim Yeung, Chi Yin Leung, Chenghe Dong
  • Publication number: 20230035011
    Abstract: The present invention provides an anti-pilling wool fabric with a coating having pilling resistance and resistance to fiber loss from fabric surface. The coating is formed by a coating formulation including at least two diisocyanates, at least two catalyst, a water dispersing agent, a buffer and water, which provides a polycarbodiimide crosslinker reactive to the relative less reactive groups on polypeptide of the wool fabric and promotes crosslinking between polypeptides of the wool fabric under relatively mild processing conditions so as to enhance mechanical strength of the wool fabric whilst no significant effect of the original finish merino wool fabric and/or garment and fiber loss from fabric surface are observed, compared to conventional treatment methods on wool fabric. A corresponding coating formulation and method of fabricating the anti-pilling wool fabric are also provided.
    Type: Application
    Filed: August 1, 2021
    Publication date: February 2, 2023
    Inventors: Wing Nien Wylie O, Tsz Hin YUI, Ka Yim YEUNG, Chi Yin LEUNG, Chenghe DONG
  • Publication number: 20220287304
    Abstract: A launderable bactericidal and virucidal fabric finish formulation. The first component is a bactericidal and virucidal agent represented by formula (I): wherein n is 7; R1, R2, and R3 are jointly or independently selected from H or one of the following groups: wherein R4 is selected from CH3 or H; m is an integer from 2 to 10; p is an integer from 9 to 15; q is an integer from 2 to 10. A second component includes one or more crosslinkers and/or one or more catalysts. A third component includes one or more transition metal salts.
    Type: Application
    Filed: March 11, 2022
    Publication date: September 15, 2022
    Inventors: Wing Nien Wylie O, Tsz Hin YUI, Chi Yin LEUNG, Chun Sing LEUNG, Ka Yim YEUNG