Patents by Inventor Ali Pireh

Ali Pireh 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).

  • Cellular telephone operable on different cellular telephone systems
    Patent number: 5020093
    Abstract: A unique dual-system cellular telephone includes a transceiver (100) having a dual bandwidth receiver, an audio/logic unit (200) having dual control programs, and a handset unit (300). The dual bandwidth receiver of the transceiver (100) has different filters (408 and 410) in the intermediate frequency section thereof which are switchably selected depending on which cellular telephone system is available. When service is not available in one of the cellular telephone systems, the unique cellular telephone automatically switches the receiver bandwidth and control program for operating on the other cellular telephone system.
    Type: Grant
    Filed: December 20, 1989
    Date of Patent: May 28, 1991
    Assignee: Motorola, Inc.
    Inventor: Ali Pireh
  • Cellular telephone responsive to service availability for operating on different cellular telephone systems
    Patent number: 5008925
    Abstract: A unique dual-system cellular telephone includes a transceiver (100) having a dual bandwidth receiver, an audio/logic unit (200) having dual control programs, and a handset unit (300). The dual bandwidth receiver of the transceiver (100) has different filters (408 and 410) in the intermediate frequency section thereof which are switchably selected depending on which cellular telephone system is available. When service is not available in one of the cellular telephone systems, the unique cellular telephone automatically switches the receiver bandwidth and control program for operating on the other cellular telephone system.
    Type: Grant
    Filed: April 20, 1990
    Date of Patent: April 16, 1991
    Assignee: Motorola, Inc.
    Inventor: Ali Pireh