Patents by Inventor Charles O. Akanbi

Charles O. Akanbi 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).

  • Controlling key-system groups from a distributed control switching system
    Patent number: 4791662
    Abstract: A distributed control switching system where calls, to and from a directory number that is shared by a key-system group of terminals, are processed cooperatiavely by multiple, distributed control units but in response to busy/idle data for the shared directory number stored advantageously by only a lead one of the control units. In addition to processing a call, for example to complete a connection to or from one of the terminals of the group, the multiple control units also cooperate as the call progresses to inform each of the group terminals of the call status as though the terminals were connected in parallel to a central office line as in an electromechanical key system.
    Type: Grant
    Filed: July 23, 1987
    Date of Patent: December 13, 1988
    Assignee: American Telephone and Telegraph Company, AT&T Bell Laboratories
    Inventors: David J. Ahnen, Charles O. Akanbi, Ian D. Bruce, Jacqueline C. Kramer, Carolyn D. Larson, Wei-Chen Ni, Annetta T. Owens