Patents by Inventor Xiao Li Yao

Xiao Li Yao 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).

  • Dimmer for energy saving lamp
    Patent number: 6727665
    Abstract: A dimmer for a compact fluorescent lamp including a high-frequency switching circuit for generating PWM or other similar control signals and a filter with simple filtering elements. The dimmer circuitry is simple and can be built on a wall-mountable housing for retro-fitting even in an existing two-wire wall-socket.
    Type: Grant
    Filed: May 30, 2002
    Date of Patent: April 27, 2004
    Assignee: Star Bright Technology Limited
    Inventor: Xiao Li Yao
  • Dimmer for energy saving lamp
    Publication number: 20030222604
    Abstract: A dimmer for a compact fluorescent lamp including a high-frequency switching circuit for generating PWM or other similar control signals and a filter with simple filtering elements. The dimmer circuitry is simple and can be built on a wall-mountable housing for retro-fitting even in an existing two-wire wall-socket.
    Type: Application
    Filed: May 30, 2002
    Publication date: December 4, 2003
    Inventor: Xiao Li Yao