Patents by Inventor LAI KWORK WAH

LAI KWORK WAH 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).

  • Shielding system for microwave ovens and microwave oven using this shielding system
    Patent number: 8772686
    Abstract: A shielding system for microwave ovens includes a first layer of parallel grounded conductors and a second layer of parallel grounded conductors substantially perpendicular to the conductors of the first layer and, for high frequency, electrically insulated therefrom, each layer presenting a plurality of parallel metal wires connected at one end and grounded.
    Type: Grant
    Filed: July 2, 2008
    Date of Patent: July 8, 2014
    Assignee: Whirlpool Corporation
    Inventors: Wai Hang Louie, Lai Kwork Wah, Leo Liao, Daniel Wan, Nordh Erik Ulf
  • SHIELDING SYSTEM FOR MICROWAVE OVENS AND MICROWAVE OVEN USING THIS SHIELDING SYSTEM
    Publication number: 20090008386
    Abstract: A shielding system for microwave ovens comprises a first layer of parallel grounded conductors and a second layer of parallel grounded conductors substantially perpendicular to the conductors of the first layer and, for high frequency, electrically insulated therefrom, each layer presenting a plurality of parallel metal wires connected at one end and grounded.
    Type: Application
    Filed: July 2, 2008
    Publication date: January 8, 2009
    Applicant: WHIRLPOOL CORPORATION
    Inventors: WAI HANG LOUIE, LAI KWORK WAH, LEO LIAO, DANIEL WAN, ULF ERIK NORDH