Patents by Inventor Guo-Fei Yao

Guo-Fei 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).

  • Current balance circuit
    Publication number: 20070285020
    Abstract: A current balance circuit is driven by a power source to balance currents flowing through a plurality of lamps. The current balance circuit includes a plurality of first balance transformers. The first balance transformers are electrically connected to the lamps respectively. The first balance transformers are connected in series.
    Type: Application
    Filed: May 23, 2007
    Publication date: December 13, 2007
    Inventors: Guo-Fei Yao, Tai-Sheng Po