Patents by Inventor Hoan T. Dang

Hoan T. Dang 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).

  • Net lurkers
    Patent number: 7415516
    Abstract: A user uses a lurker to check a colleague's location electronically. If the colleague is at the location and a device is available for communicating with the colleague, a communications channel is established between a device near the lurker and the colleague's device, and communication can begin.
    Type: Grant
    Filed: June 15, 2001
    Date of Patent: August 19, 2008
    Assignee: Cisco Technology, Inc.
    Inventors: Peter Michael Gits, Dale J. Seavey, Hoan T. Dang, David R. Oran