Patents by Inventor Yihwu Han

Yihwu Han 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).

  • Clipboard with sliding tray
    Publication number: 20060255584
    Abstract: The invention is a clipboard apparatus comprising a thin tray that can be slid out easily when needed, otherwise closeted. The tray can hold a few pages of paper kept for the privacy of the information or for creating a positive effect when showing it. When the tray is closed, the clipboard looks just like a conventional one. The invention is easy to use and handy to take around.
    Type: Application
    Filed: May 16, 2005
    Publication date: November 16, 2006
    Inventor: Yihwu Han
  • Apparatus and method for error isolation in hybrid communications systems
    Patent number: 6873599
    Abstract: A hybrid telecommunications component in accordance with the principles of the present invention affords loopback test capabilities across boundaries between circuit switched and packet switched components. A loopback test which encompasses at least a portion of the packet switched side of a hybrid system may be initiated from the circuit switched side of the hybrid device. Additionally, a loopback test which encompasses at least a portion of the circuit switched side of a hybrid system may be initiated from the packet switched side of the hybrid device. In an illustrative embodiment, when a loopback test of the circuit switched side is initiated by the packet switched side, the loopback test is carried out by the circuit switched side, with the results being reported by the circuit switched side to the packet switched side.
    Type: Grant
    Filed: December 21, 1999
    Date of Patent: March 29, 2005
    Assignee: Lucent Technologies Inc.
    Inventor: Yihwu Han