Patents by Inventor Sandra C. Lenhart

Sandra C. Lenhart 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).

  • Methods and apparatus to provide enhanced 911 (E911) services for nomadic users
    Patent number: 8599718
    Abstract: Methods and apparatus provide enhanced 911 (E911) services for nomadic users are disclosed. An example method comprises receiving an Internet protocol (IP) address associated with a voice over internet protocol (VoIP) device and a media access control (MAC) address associated with the VoIP device, detecting when the VoIP device is outside an access network based on the MAC address and the IP address, prompting a user of the VoIP device to provide geographic location information for the VoIP device when the VoIP device is outside the access network, and updating enhanced 911 (E911) information for the VoIP device based on the geographic location information.
    Type: Grant
    Filed: June 26, 2007
    Date of Patent: December 3, 2013
    Assignee: AT&T Intellectual Property I, L.P.
    Inventors: Leonardo Velazquez, Sandra C. Lenhart, Sudha Gopal, Stephen Rys
  • Methods and apparatus to update geographic location information associated with internet protocol devices for E-911 emergency services
    Patent number: 8064875
    Abstract: Example methods and apparatus to enable 911 services to an internet protocol (“IP”) communication device are disclosed. A disclosed example method involves receiving a media access control address associated with the IP communication device and a first internet protocol address associated with a gateway through which the IP communication device is obtaining network access. A second internet protocol address associated with the media access control address is then retrieved. The first internet protocol address with the second internet protocol address are then compared. When the first internet protocol address does not match the second internet protocol address, the media access control address is associated with the first internet protocol address in a database to designate a geographic location of the device.
    Type: Grant
    Filed: August 4, 2006
    Date of Patent: November 22, 2011
    Assignee: AT&T Intellectual Property I, L.P.
    Inventors: Leonardo Velazquez, Sudha Gopal, Adam Lee Klein, Sandra C. Lenhart, Stephen Rys
  • METHODS AND APPARATUS TO PROVIDE ENHANCED 911 (E911) SERVICES FOR NOMADIC USERS
    Publication number: 20090003312
    Abstract: Methods and apparatus provide enhanced 911 (E911) services for nomadic users are disclosed. An example method comprises receiving an Internet protocol (IP) address associated with a voice over internet protocol (VoIP) device and a media access control (MAC) address associated with the VoIP device, detecting when the VoIP device is outside an access network based on the MAC address and the IP address, prompting a user of the VoIP device to provide geographic location information for the VoIP device when the VoIP device is outside the access network, and updating enhanced 911 (E911) information for the VoIP device based on the geographic location information.
    Type: Application
    Filed: June 26, 2007
    Publication date: January 1, 2009
    Inventors: Leonardo Velazquez, Sandra C. Lenhart, Sudha Gopal, Stephen Rys
  • METHODS AND APPARATUS TO UPDATE GEOGRAPHIC LOCATION INFORMATION ASSOCIATED WITH INTERNET PROTOCOL DEVICES FOR E-911 EMERGENCY SERVICES
    Publication number: 20080125077
    Abstract: Example methods and apparatus to enable 911 services to an internet protocol (“IP”) communication device are disclosed. A disclosed example method involves receiving a media access control address associated with the IP communication device and a first internet protocol address associated with a gateway through which the IP communication device is obtaining network access. A second internet protocol address associated with the media access control address is then retrieved. The first internet protocol address with the second internet protocol address are then compared. When the first internet protocol address does not match the second internet protocol address, the media access control address is associated with the first internet protocol address in a database to designate a geographic location of the device.
    Type: Application
    Filed: August 4, 2006
    Publication date: May 29, 2008
    Inventors: Leonardo Velazquez, Sudha Gopal, Adam Lee Klein, Sandra C. Lenhart, Stephen Rys