Patents by Inventor Edmund En Yuan

Edmund En Yuan 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).

  • High frequency pulse width modulation of AC current for control of lighting load power
    Patent number: 6208122
    Abstract: Pulse width modulation of a high frequency series of AC current that is delivered to a lighting load(s) in “slices ” of current by a controller device that enables users to dim their loads while minimizing and/or virtually eliminating the externalities associated with current dimming systems.
    Type: Grant
    Filed: September 28, 1999
    Date of Patent: March 27, 2001
    Assignee: Triatek, Inc.
    Inventor: Edmund En Yuan