Patents by Inventor Nuruddin Ladhani

Nuruddin Ladhani 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).

  • Radio telephone system with one-to-many dispatch system
    Patent number: 6714795
    Abstract: A one-to-many dispatch method for use in a TDMA or other wireless telephone system. The one-to-many dispatch call is placed by sending a Request message 204 from a Personal Station PS 112 to a Control Center Station (CS) 120 which assigns a channel with an Assignment message 208. The PS 112 sends a call setup message over the control channel resulting in a channel assign message 242 being broadcast repeatedly. Call connect messages over the Assigned Channel AC 244 are also repeated from the CS 120 to indicate the open connection. A hang timer is started when the PS 112 ceases transmission of voice and the connection is torn down upon expiry of the hang timer unless another PS transmits a call setup message 234 on the Assigned Channel AC before the expiry of the hang timer.
    Type: Grant
    Filed: June 26, 2000
    Date of Patent: March 30, 2004
    Assignee: Motorola, Inc.
    Inventors: Earle G. Long, Michael H. Retzer, Nuruddin Ladhani