Patents by Inventor Hong-Shung Liu

Hong-Shung Liu 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).

  • Digital power inverter
    Patent number: 6731485
    Abstract: A digital electric power inverter comprising: a CPU, a PWM driving circuit, a PWM converting circuit, a rectifying circuit, an AC driving circuit, a DC/AC inverting circuit, an overload detecting circuit and an alarm circuit, the power inverter is characterized by that: the entire circuitry of the electric power inverter is designed to be controlled by the CPU that can accurately control these circuits to get an ability of high driving outputting.
    Type: Grant
    Filed: May 24, 2002
    Date of Patent: May 4, 2004
    Assignee: Long Well Electronics Corp.
    Inventor: Hong-Shung Liu