Patents by Inventor Billy Liu Wai Hung

Billy Liu Wai Hung 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).

  • Headphones
    Patent number: D772193
    Type: Grant
    Filed: April 13, 2015
    Date of Patent: November 22, 2016
    Assignee: Gibson Brands, Inc.
    Inventors: Rojkarnjanarak Garan, Billy Liu Wai Hung
  • Charger
    Patent number: D822597
    Type: Grant
    Filed: April 21, 2017
    Date of Patent: July 10, 2018
    Assignee: Energizer Brands, LLC
    Inventors: Billy Liu Wai Hung, Michel Guy