Patents by Inventor Chao Sung Wang

Chao Sung Wang 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).

  • Compact light emitting diode retrofit lamp and method for traffic signal lights
    Patent number: 6911915
    Abstract: A high power LED lamp and method for retrofitting conventional traffic signal lamps. The LED lamp includes a housing, a power supply disposed in the housing, a plurality of LEDs mounted to a substantially planar mounting surface in the housing and electrically connected to the power supply for producing diverging light, and a threaded electrical connector extending from the housing. The method includes replacing a conventional incandescent light bulb with the LED lamp, and installing a Fresnel lens inside the traffic signal lamp that collimates and just fills and illuminates the outer lens of the traffic signal lamp.
    Type: Grant
    Filed: May 30, 2003
    Date of Patent: June 28, 2005
    Assignee: Leotek Electronics Corporation
    Inventors: Chen H. Wu, Steve Bacilieri, Chao Sung Wang, Shih Chang Wang
  • Compact light emitting diode retrofit lamp and method for traffic signal lights
    Publication number: 20040070519
    Abstract: A high power LED lamp and method for retrofitting conventional traffic signal lamps. The LED lamp includes a housing, a power supply disposed in the housing, a plurality of LEDs mounted to a substantially planar mounting surface in the housing and electrically connected to the power supply for producing diverging light, and a threaded electrical connector extending from the housing. The method includes replacing a convention incandescent light bulb with the LED lamp, and installing a Fresnel lens inside the traffic signal lamp that collimates and just fills and illuminates the outer lens of the traffic signal lamp.
    Type: Application
    Filed: May 30, 2003
    Publication date: April 15, 2004
    Inventors: Chen H. Wu, Steve Bacilieri, Chao Sung Wang, Shih Chang Wang