Patents by Inventor Virarghavan Sudarsan

Virarghavan Sudarsan 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).

  • Method for porting a directory number from one wireless service provider to another
    Patent number: 6138023
    Abstract: A method of porting a wireless terminal's directory number from one wireless service provider to another is disclosed. One illustrative embodiment involves creating a temporary pointer in the recipient wireless service provider's Home Location Register that, during the inchoate porting process, directs a call for the directory number to the donor wireless service provider for completion in well-known fashion. When the porting process is complete, the temporary pointer is deactivated and call processing is completed by the recipient wireless service provider in well-known fashion.
    Type: Grant
    Filed: September 23, 1997
    Date of Patent: October 24, 2000
    Assignee: Lucent Technologies, Inc.
    Inventors: Anjana Agarwal, Douglas Harold Rollender, Virarghavan Sudarsan