Patents by Inventor Wai Ki LEUNG

Wai Ki LEUNG 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: 11929248
    Abstract: A Far-UVC excimer light source contains a first electrode adapted to be energized, a second electrode adapted to be energized, a body defining a cavity that is filled with an excited molecule complex between the first and second electrodes; and a Far-UVC optical dielectric coating filter which is a Far-UVC filter attached to the interior side of the first electrode and adapted to filter a Far-UVC light excited in the cavity of the body. The Far-UVC dielectric coating is located inside the light source, between the cavity with the excited molecules and the first electrode. The Far-UVC filter attached to the interior side of the first electrode is a transmissive Far-UVC optical filtering dielectric coating or coated glass which is integrated, placed on, or near the interior side of the first electrode inside the light source.
    Type: Grant
    Filed: May 22, 2023
    Date of Patent: March 12, 2024
    Inventors: Kwok Wa Leung, Wai Ki Lee
  • Patent number: 11929563
    Abstract: A substrate-integrated dielectric resonator contains a substrate layer with a first dielectric constant, a plurality of dielectric vias, and a plurality of second vias. Each dielectric via includes a first via-hole extending through the substrate layer, and a dielectric material with a second dielectric constant contained within the first via-hole. Each second via has a second via-hole extending through the substrate layer and filled with gas. A dielectric resonator antenna containing a substrate-integrated dielectric resonator and a method of fabricating the same is also disclosed. By skillfully arranging second vias inside the DRA, the resonant frequencies of different modes can be controlled, and a wide impedance band-width with stable radiation performance can be achieved.
    Type: Grant
    Filed: April 5, 2022
    Date of Patent: March 12, 2024
    Assignee: City University of Hong Kong
    Inventors: Kwok Wa Leung, Hauke Ingolf Kremer, Wai Ki Lee
  • Publication number: 20210402239
    Abstract: A trampoline having a frame and a jumping mat formed in a single piece from woven elasticated material. The trampoline has a flat base portion lower than the periphery of the jumping mat, and an integral side portion continuous with the base portion around the entire periphery thereof and extending to the periphery of the jumping mat. The jumping mat is connected to the frame by at least two biasing connectors to be supported under tension above ground or floor. The frame may include a first circumextending support coupled to the periphery of the jumping mat by at least one biasing connector to support the periphery of the jumping mat above the ground or floor. A circumextending safety enclosure net has first and second portions extending respectively above and below the level of the first circumextending support. the second portion extending to a second circumextending support forming part of the frame.
    Type: Application
    Filed: November 26, 2019
    Publication date: December 30, 2021
    Applicant: PLUM PRODUCTS HOLDINGS PTY. LTD.
    Inventors: David WOODMAN, Wai Ki LEUNG, Joseph MAZOYER, Philippe BAJARD
  • Patent number: D1010048
    Type: Grant
    Filed: May 15, 2020
    Date of Patent: January 2, 2024
    Assignee: PLUM PRODUCTS HOLDINGS PTY LTD
    Inventors: David Woodman, Wai Ki Leung, Joseph Mazoyer, Philippe Bajard