Patents by Inventor Nasir Ghafoor

Nasir Ghafoor 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 and system for assigning multiple directory numbers (DN) to a personal communication system (PCS) telephone
    Patent number: 6618587
    Abstract: The present invention comprises methods and systems for activating in a switching system a directory number (DN) from among a plurality of directory numbers assigned to a PCS mobile telephone handset by de-activating the current active directory number, identifying an inactive directory number, and activating the inactive directory number. The present invention further comprises methods and systems for activating in a PCS mobile telephone handset a directory number from among a plurality of directory numbers assigned to the handset by de-activating the current active directory number, identifying an inactive directory number, and activating the inactive directory number.
    Type: Grant
    Filed: March 16, 1998
    Date of Patent: September 9, 2003
    Assignee: Nortel Networks Limited
    Inventor: Nasir Ghafoor