Patents by Inventor Affonso F. Da Costa Ribeiro Neto

Affonso F. Da Costa Ribeiro Neto 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).

  • Calling line tracing system and identification detector
    Patent number: 4754475
    Abstract: A detector identification device is provided on the premises of the called elephone station capable of detecting network telephone signals, converting them to digital signals and displaying the digital signals. The device is also capable of providing ringing and other calling signals to the called telephone station. The telephone exchange serving the called telephone station is programmed to initiate a back signaling process to the exchange serving the calling telephone station. In addition, the device transmits back signals used to request and thus complete the identification of the calling telephone station from the telephone network.
    Type: Grant
    Filed: July 22, 1987
    Date of Patent: June 28, 1988
    Assignee: Sonintel Sociedade Nacional de Industria de Telecomunicacoes Ltda.
    Inventors: Jose P. Pintos, Jose D. M. Catoira, Affonso F. Da Costa Ribeiro Neto