Patents by Inventor Lok Hang Keung

Lok Hang Keung 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).

  • Publication number: 20220339615
    Abstract: The present invention provides a metal/metal oxide doped-WO3 flower-like assemblies as a photocatalyst applied to photocatalytic inactivation of influenza virus and bacteria under UV or visible light activation, and further provides a surface-modulator-driven synthesis method for producing WO3 flower-like assemblies, as well as doping methods for doping the metal/metal oxide to the WO3 flower-like assemblies. The metal/metal oxide doped in WO3 flower-like assemblies can further enhance the antiviral and antibacterial performances.
    Type: Application
    Filed: March 17, 2022
    Publication date: October 27, 2022
    Inventors: Lok Hang KEUNG, Juanfang CAI, King Ho SO, Ka Kit YEE, Ka Chun LEE, Lok-Shun LAI
  • Publication number: 20220118150
    Abstract: A plasma driven catalyst apparatus useful for disinfecting and purifying air. The apparatus has a synergistically favorable effect from plasma and catalyst on high disinfecting and purifying efficiency and efficacy, low by-product formation, and low energy consumption. The plasma combined with catalyst enhances the production of new reactive species, increases the oxidizing power of the plasma discharge, as well as activate the catalyst that additionally contributes towards the disinfection and purification process and the elimination of toxic by-products.
    Type: Application
    Filed: October 18, 2021
    Publication date: April 21, 2022
    Inventors: Lok Hang KEUNG, Juanfang CAI, King Ho SO, Ka Kit YEE, Ka Chun LEE
  • Publication number: 20220111234
    Abstract: A personal air-purifying (PAP) mask includes a fan assembly; a plasma driven catalyst (PDC) assembly including an anti-microbial catalyst, wherein the anti-microbial catalyst is incorporated within a nanofiber layer of the PDC assembly; and a pre-filter, wherein the pre-filter also includes the anti-microbial catalyst incorporated therewith; wherein the PDC assembly is positioned between the fan assembly and the pre-filter, and wherein the fan assembly, the PDC assembly, and the pre-filter are within a main body of the PAP mask.
    Type: Application
    Filed: October 12, 2021
    Publication date: April 14, 2022
    Inventors: Lok Hang KEUNG, King Ho SO, Juanfang CAI, Chun Kit LIU
  • Publication number: 20220081573
    Abstract: An anti-tarnish composition including a polymer resin; a photoinitiator; a coating thickness adjusting agent; and optionally a dye useful for protecting metal substrates from tarnishing and methods of applying the anti-tarnish composition to metal substrates using an electroplating method. The anti-tarnish composition can be selectively applied to the metal surfaces of jewelry containing gemstones.
    Type: Application
    Filed: August 11, 2021
    Publication date: March 17, 2022
    Inventors: King Ho SO, Lok Hang KEUNG, Ka Kit YEE, Ka Chun LEE
  • Patent number: 10280514
    Abstract: This invention relates to an object with electroless plated coatings that includes an adhesion coating, a smoothening coating, a silver coating and an anti-scratch coating. A method of fabricating the electroless plated object is also described.
    Type: Grant
    Filed: September 11, 2015
    Date of Patent: May 7, 2019
    Assignee: S.T. Trading Company Limited
    Inventors: Jianying Miao, Wei Li, Shing Hang Ng, Lok Hang Keung, Tao Gong
  • Patent number: 9713801
    Abstract: The present application provides a self-healing material which comprises silica sol as self-healing agent encapsulated by a polymeric shell. The self-healing material may be further embedded in a concrete mixture to heal micro-cracks in concrete. A method for preparing the self-healing material is also provided.
    Type: Grant
    Filed: January 24, 2017
    Date of Patent: July 25, 2017
    Assignee: Nano and Advanced Materials Institute Limited
    Inventors: Lok Hang Keung, Noel Peter Bengzon Tan, Wing Ho Choi, Wai Chak Lam
  • Publication number: 20170128903
    Abstract: The present application provides a self-healing material which comprises silica sol as self-healing agent encapsulated by a polymeric shell. The self-healing material may be further embedded in a concrete mixture to heal micro-cracks in concrete. A method for preparing the self-healing material is also provided.
    Type: Application
    Filed: January 24, 2017
    Publication date: May 11, 2017
    Inventors: Lok Hang Keung, Noel Peter Bengzon Tan, Wing Ho Choi, Wai Chak Lam
  • Patent number: 9636432
    Abstract: The presently claimed invention provides a photocatalytic air purification unit, comprising a fin structure and an UV lamp. The fin structure comprises a plurality of fins coated with a layer of photocatalyst, and said fin structure is able to increase the surface area for photocatalyst coating, ultimately increasing air pollutant removal efficiency with minimum air resistance. The air purification unit of the present invention is preferably installed in a HVAC system.
    Type: Grant
    Filed: January 29, 2014
    Date of Patent: May 2, 2017
    Assignee: NANO AND ADVANCED MATERIALS INSTITUTE LIMITED
    Inventor: Lok Hang Keung
  • Patent number: 9598313
    Abstract: The present application provides a self-healing material which comprises silica sol as self-healing agent encapsulated by a polymeric shell. The self-healing material may be further embedded in a concrete mixture to heal micro-cracks in concrete. A method for preparing the self-healing material is also provided.
    Type: Grant
    Filed: May 28, 2015
    Date of Patent: March 21, 2017
    Assignee: Nano and Advanced Materials Institute Limited
    Inventors: Lok Hang Keung, Noel Peter Bengzon Tan, Wing Ho Choi, Wai Chak Lam
  • Publication number: 20160047051
    Abstract: This invention relates to an object with electroless plated coatings that includes an adhesion coating, a smoothening coating, a silver coating and an anti-scratch coating. A method of fabricating the electroless plated object is also described.
    Type: Application
    Filed: September 11, 2015
    Publication date: February 18, 2016
    Inventors: Jianying MIAO, Wei LI, Shing Hang NG, Lok Hang KEUNG, Tao GONG
  • Publication number: 20150344365
    Abstract: The present application provides a self-healing material which comprises silica sol as self-healing agent encapsulated by a polymeric shell. The self-healing material may be further embedded in a concrete mixture to heal micro-cracks in concrete. A method for preparing the self-healing material is also provided.
    Type: Application
    Filed: May 28, 2015
    Publication date: December 3, 2015
    Inventors: Lok Hang Keung, Noel Peter Bengzon Tan, Wing Ho Choi, Wai Chak Lam
  • Publication number: 20140294679
    Abstract: The presently claimed invention provides a phtotocatalytic air purification unit, comprising a fin structure and an UV lamp. The fin structure comprises a plurality of fins coated with a layer of photocatalsyt, and said fin structure is able to increase the surface area for photocatalyst coating, ultimately increasing air pollutant removal efficiency with minimum air resistance. The air purification unit of the present invention is preferably installed in a HVAC system.
    Type: Application
    Filed: January 29, 2014
    Publication date: October 2, 2014
    Applicant: Nano and Advanced Materials Institute Limited
    Inventor: Lok Hang KEUNG
  • Publication number: 20120295121
    Abstract: Multi-layer coatings suitable for imparting a decorative, durable mirror-like finish to substrates such as metals are provided which contain a base coating of epoxy, a mirror-like coating, and a scratch-resistant surface coating.
    Type: Application
    Filed: May 11, 2012
    Publication date: November 22, 2012
    Applicant: S.T. Trading Company Limited
    Inventors: Jianying Miao, Wei Li, Shing Hang Ng, Lok Hang Keung, Tao Gong