Patents by Inventor Wai Hong YU

Wai Hong 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).

  • ANTIMICROBIAL COMPOSITIONS WITH ENHANCED EFFICACY AND PROLONGED PERFORMANCE LIFETIME, AND PREPARATION METHOD THEREOF
    Publication number: 20250051547
    Abstract: Provided herein are antimicrobial polymer compositions and antimicrobial coating formulations useful for preparing antimicrobial substrates and imparting antimicrobial properties to surfaces, and methods for their use and preparation thereof.
    Type: Application
    Filed: January 28, 2023
    Publication date: February 13, 2025
    Inventors: Wenjun MENG, Shengchang TANG, Jihan YI, Mingyu ZHANG, Wai Hong YU, Sze Wing WONG
  • Germ-repellent book and food paper packaging, and method of manufacture
    Patent number: 12110635
    Abstract: A germ-repellent paper product contains a paper substrate and a germ-repellent overprint varnish. The germ-repellent overprint varnish contains a varnish and a germ-repellent agent. The germ-repellent overprint varnish is coated onto the paper substrate to form a germ-repellent paper product. A method for manufacturing such a germ-repellent paper product is also provided.
    Type: Grant
    Filed: April 7, 2020
    Date of Patent: October 8, 2024
    Assignee: MAIN CHOICE PAPER PRODUCTS LIMITED
    Inventors: Wenjun Meng, Pit Shing Tung, Wai Hong Yu, Mingyu Zhang
  • Germ-repellent book and food paper packaging, and method of manufacture
    Patent number: 12000092
    Abstract: A germ-repellent paper product contains a paper substrate and a germ-repellent overprint varnish. The germ-repellent overprint varnish contains a varnish and a germ-repellent agent. The germ-repellent overprint varnish is coated onto the paper substrate to form a germ-repellent paper product. A method for manufacturing such a germ-repellent paper product is also provided.
    Type: Grant
    Filed: July 19, 2021
    Date of Patent: June 4, 2024
    Assignee: MAIN CHOICE PAPER PRODUCTS LIMITED
    Inventors: Wenjun Meng, Pit Shing Tung, Wai Hong Yu, Mingyu Zhang
  • FOOD CONTACT SAFE, GERM REPELLENT MATERIAL
    Publication number: 20230374292
    Abstract: A food contact safe, germ repellent plastic selected from modified thermoplastic, vulcanized silicone rubber or modified base plastic. The plastic includes an anti-biofouling agent at approximately 1 to 20 wt. % to the total weight of the plastic; and one or more components of fillers, carrier agent, mold releasing agent, curing agent, and/or oil, at approximately 0.1 to 2 wt. % for each or more of the components to the total weight of the plastic, where the anti-biofouling agent forming a hydration layer on the plastic imparts germ repellency against bacteria including Escherichia coli and Staphylococcus aureus while optical and mechanical properties including transmittance, tensile strength, impact strength, hardness, and/or heat deflection temperature of the plastic is/are changed by less than 10% after being associated with the anti-biofouling agent and the one or more of the components other than the anti-biofouling agent.
    Type: Application
    Filed: December 22, 2021
    Publication date: November 23, 2023
    Inventors: Wenjun MENG, Wai Hong YU, Mingyu ZHANG, Wing Hin LEUNG, Yueying CHEN
  • GERM-REPELLENT BOOK AND FOOD PAPER PACKAGING, AND METHOD OF MANUFACTURE
    Publication number: 20230022618
    Abstract: A germ-repellent paper product contains a paper substrate and a germ-repellent overprint varnish. The germ-repellent overprint varnish contains a varnish and a germ-repellent agent. The germ-repellent overprint varnish is coated onto the paper substrate to form a germ-repellent paper product. A method for manufacturing such a germ-repellent paper product is also provided.
    Type: Application
    Filed: July 19, 2021
    Publication date: January 26, 2023
    Applicant: Main Choice Paper Products Limited
    Inventors: Wenjun MENG, Pit Shing TUNG, Wai Hong YU, Mingyu ZHANG
  • GERM-REPELLENT BOOK AND FOOD PAPER PACKAGING, AND METHOD OF MANUFACTURE
    Publication number: 20220064861
    Abstract: A germ-repellent paper product contains a paper substrate and a germ-repellent overprint varnish. The germ-repellent overprint varnish contains a varnish and a germ-repellent agent. The germ-repellent overprint varnish is coated onto the paper substrate to form a germ-repellent paper product. A method for manufacturing such a germ-repellent paper product is also provided.
    Type: Application
    Filed: April 7, 2020
    Publication date: March 3, 2022
    Applicant: Main Choice Paper Products Limited
    Inventors: Wenjun MENG, Pit Shing TUNG, Wai Hong YU, Mingyu ZHANG