Patents by Inventor Gerard Bidault

Gerard Bidault 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).

  • Sound signaling generation device for pedestrians
    Patent number: 5241307
    Abstract: Sound signaling and optical signaling at a crosswalk are both activated by a single push button. An activation of optical signaling such as green and red figurines is immediate, whereas the transmission of a sound message authorizing or forbidding a crossing is activated only when the pedestrian pushes the button for a predetermined time. The generation device for sound signals is controlled by a microprocessor including logic and analog inputs and outputs, the messages being stored in digital form and transmitted according to the ADPCM method.
    Type: Grant
    Filed: December 4, 1991
    Date of Patent: August 31, 1993
    Assignee: Societe d'Etudes et de Fabrication Electronique et Radioelectrique-S.E.F. E.R.
    Inventors: Gerard Bidault, Dominique Leveque