Patents by Inventor Yee Chyan Tan

Yee Chyan Tan 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).

  • Power factor correction circuit
    Patent number: 8164930
    Abstract: A power factor correction circuit having an input current for reducing the distortion and harmonics generated in a power line feeding power supply. The power factor correction circuit includes a control switch (such as an IGBT) for producing a control switch current and virtual short circuit; a load for acting as power demand from a load and producing a load current; and one or more of resistors for measuring current within said circuit.
    Type: Grant
    Filed: January 15, 2008
    Date of Patent: April 24, 2012
    Assignee: OYL Research and Development Centre Sdn. Bhd.
    Inventors: Yee Chyan Tan, Yit Koon Lim
  • Communication Apparatus
    Publication number: 20080294957
    Abstract: A communication apparatus for converting signal between differential interchange circuit and multiple devices having input and output terminals comprising: a timer for detecting logic level at idle state; a flip-flop having at least one output terminals for switching a signal from one to the other by means of an external signal; and at least one or more of logic gates for inverting said external signal from said circuit.
    Type: Application
    Filed: January 8, 2008
    Publication date: November 27, 2008
    Applicant: OYL RESEARCH AND DEVELOPMENT CENTRE SDN. BHD.
    Inventors: Yee Chyan Tan, Ming Hong Toong
  • Power Factor Correction Circuit
    Publication number: 20080285318
    Abstract: A power factor correction circuit having an input current for reducing the distortion and harmonics generated in a power line feeding power supply comprising: a control switch (IGBT) for producing a control switch current and virtual short circuit; a load for acting as power demand from a load and producing a load current; and one or more of resistors for measuring current within said circuit.
    Type: Application
    Filed: January 15, 2008
    Publication date: November 20, 2008
    Applicant: OYL RESEARCH AND DEVELOPMENT CENTRE SDN. BHD.
    Inventors: Yee Chyan Tan, Yit Koon Lim