Patents by Inventor Jean-Claude Rouffy

Jean-Claude Rouffy 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).

  • Electrochemical sensor having microcavities
    Patent number: 5087275
    Abstract: A method for making a microcavity in an enamel layer is disclosed. For this purpose, a layer of a carbon-based material with the dimensions of the microcavity to be obtained is provided. This layer is coated with an enamel except in a limited zone. The unit is heated to high temperature so as to cause combustion of the carbon-based material. The combustion gases escape through the reduced zone.
    Type: Grant
    Filed: June 28, 1990
    Date of Patent: February 11, 1992
    Assignee: Thomson-CSF
    Inventors: Didier Pribat, Joel Perret, Jean-Claude Rouffy, Gonzalo Velasco
  • Temperature compensated resistive type sensor for the measurement of relative concentrations of fluid reactive species
    Patent number: 5017340
    Abstract: Disclosed is an oxygen sensor of the resistive type for the measurement of relative fluid concentrations of fluid reactive species. The following are disposed on one and the same substrate:a sensitive element, the resistivity of which is sensitive to an excess of one of the reactive species;a thermistor mounted as a resistance bridge with the sensitive element;a heating resistor fixing the minimum temperature threshold of operation.Application: The disclosed device can be applied notably to oxygen sensors.
    Type: Grant
    Filed: September 12, 1989
    Date of Patent: May 21, 1991
    Assignee: Thomson-CSF
    Inventors: Didier Pribat, Joel Perret, Jean-Claude Rouffy
  • Method to make microcavities and its application to an electrochemical sensor
    Patent number: 4956073
    Abstract: A method for making a microcavity in an enamel layer is disclosed. For this purpose, a layer of a carbon-based material with the dimensions of the microcavity to be obtained is provided. This layer is coated with an enamel except in a limited zone. The unit is heated to high temperature so as to cause combustion of the carbon-based material. The combustion gases escape through the reduced zone.
    Type: Grant
    Filed: September 19, 1988
    Date of Patent: September 11, 1990
    Assignee: Thomson-CSF
    Inventors: Didier Pribat, Joel Perret, Jean-Claude Rouffy, Gonzalo Velasco