Patents by Inventor Chi-Kit Leung

Chi-Kit 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).

  • Controlled sulfur species deposition process
    Patent number: 7811634
    Abstract: The present invention is a method for the deposition of a thin film of a pre-determined composition onto a substrate, the thin film comprising ternary, quaternary or higher sulfide compounds selected from the group consisting of thioaluminates, thiogallates and thioindates of at least one element from Groups IIA and IIB of the Periodic Table. The method comprises volatizing at least one source material of a sulfide of a pre-determined composition to form a sulfur-bearing thin film composition on a substrate and simultaneously inhibiting any excess quantity of sulfur-bearing species volatilized from the at least one source material from impinging on the substrate. The method improves the luminance and emission spectrum of phosphor materials used for full color ac electroluminescent displays employing thick film dielectric layers with a high dielectric constant.
    Type: Grant
    Filed: January 29, 2004
    Date of Patent: October 12, 2010
    Assignee: iFire IP Corporation
    Inventors: Yongbao Xin, Jim Stiles, Chi Kit Leung, Terry Hunt, Joe Acchione
  • Video game console
    Patent number: D538858
    Type: Grant
    Filed: October 21, 2005
    Date of Patent: March 20, 2007
    Assignee: Vtech Electronics, Ltd.
    Inventors: Stephine Mak Pui See, Donny Chi Kit Leung
  • Video game controller with rotational element
    Patent number: D553619
    Type: Grant
    Filed: October 21, 2005
    Date of Patent: October 23, 2007
    Assignee: VTech Electronics, Ltd
    Inventors: Pui See (Stephine) Mak, Donny Chi Kit Leung
  • Data disc enclosure
    Patent number: D563414
    Type: Grant
    Filed: October 21, 2005
    Date of Patent: March 4, 2008
    Assignee: VTech Electronics, Ltd.
    Inventors: Stephine Mak Pui See, Donny Chi Kit Leung
  • Housing for electronic game or the like
    Patent number: D321375
    Type: Grant
    Filed: March 21, 1989
    Date of Patent: November 5, 1991
    Assignee: Video Technology Industries, Inc.
    Inventor: Chi-Kit Leung
  • Housing for electronic game or the like
    Patent number: D321376
    Type: Grant
    Filed: March 21, 1989
    Date of Patent: November 5, 1991
    Assignee: Video Technologies Industries, Inc.
    Inventor: Chi-Kit Leung