Patents by Inventor Dennis J. Hasenfang

Dennis J. Hasenfang 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: 8515386
    Abstract: A method for determining the physical location of a VoIP phone and transmitting the physical location to an emergency services call center or the like comprises the steps of determining the physical location of the VoIP phone using multiple location detection technologies, placing a call to an emergency services call center using the VoIP phone, and automatically transmitting the physical location of the VoIP phone to the emergency services call center.
    Type: Grant
    Filed: April 25, 2011
    Date of Patent: August 20, 2013
    Inventors: Dennis J. Hasenfang, Christopher C. Willis
  • Emergency services for voice over IP telephony (E-VoIP)
    Publication number: 20110263219
    Abstract: A method for determining the physical location of a VoIP phone and transmitting the physical location to an emergency services call center or the like comprises the steps of determining the physical location of the VoIP phone using multiple location detection technologies, placing a call to an emergency services call center using the VoIP phone, and automatically transmitting the physical location of the VoIP phone to the emergency services call center.
    Type: Application
    Filed: April 25, 2011
    Publication date: October 27, 2011
    Inventors: Dennis J. Hasenfang, Christopher C. Willis
  • 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