Patents by Inventor Philippe LaHarrague

Philippe LaHarrague 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).

  • System for monitoring containers with ultrasonic seals using autonomous terminals
    Patent number: 4689612
    Abstract: System for monitoring containers with ultrasonic seals.According to the invention the seal is duplicated and comprises a transmitting transducer and a receiving transducer. The exciting signal is a voltage step applied to the transmitting transducer and the circuit able to supply said step is directly connected to the transmitting transducer without a connecting cable.Application to the monitoring of containers containing dangerous products, precious materials, documents, etc.
    Type: Grant
    Filed: September 16, 1985
    Date of Patent: August 25, 1987
    Assignees: Commissariat a l'Energie Atomique, Communau te Europeenne de l'Energie Atomique (Euratom)
    Inventors: Alfred Schaal, Philippe LaHarrague, Rene Denis