Patents by Inventor Antoine Belaigues

Antoine Belaigues 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).

  • Patent number: 4355310
    Abstract: A communication system capable of continuously exchanging digital information in a well logging installation between apparatus arranged on the earth's surface and apparatus arranged in an earth borehole, interconnected by a cable. Both the surface apparatus and the downhole apparatus include a controller and a modem for sending digital command messages downhole and digital data messages uphole. The downhole apparatus also includes one or more tools which are coupled in parallel to the downhole controller via a bi-directional bus. Each tool has a universal (identical) interface adapted to recognize a specific address unique to itself and a universal address common to all interfaces. A command message with a universal address may activate all of the tools in a "free-running" mode to transmit a predetermined quantity of data in a predetermined sequence.
    Type: Grant
    Filed: August 6, 1979
    Date of Patent: October 19, 1982
    Assignee: Schlumberger Technology Corporation
    Inventors: Antoine Belaigues, Alain Paumard, Yves Durand, Thomas J. Calvert