Patents by Inventor Christopher C Willis

Christopher C Willis 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).

  • Emergency services for voice over IP telephony (E-VoIP)
    Patent number: 7933580
    Abstract: A method for determining the physical coordinates of a VoIP phone and transmitting the physical coordinates to an emergency services call center or the like comprises the steps of determining the physical coordinates of the VoIP phone using signals from a GPS or cellular network, placing a call to an emergency services call center using the VoIP phone, and automatically transmitting the physical coordinates of the VoIP phone to the emergency services call center.
    Type: Grant
    Filed: August 7, 2006
    Date of Patent: April 26, 2011
    Inventors: Dennis J. Hasenfang, Christopher C Willis