Patents by Inventor Nicolas Lessard

Nicolas Lessard 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).

  • Miniature high sensitivity pressure sensor
    Patent number: 8752435
    Abstract: There is described a miniature fiber optic pressure sensor design where sensitivity around specific biased pressure is optimized. In an embodiment, the pressure sensor is a Fabry-Perot (FP) sensor which comprises a substrate; and a diaphragm mounted on the substrate. The diaphragm has a center and comprises: a first layer comprising a first material; and a second layer comprising a second material. The second layer forms a dot or a ring. The dot or ring is mounted on the first layer and is centered about the center of the diaphragm. The second material comprises internal pre-stresses to cause the center of the diaphragm (in the case of a dot) or the peripheral area about the center of the diaphragm (in the case of a ring) to camber away from the substrate upon relaxing the internal pre-stresses.
    Type: Grant
    Filed: March 8, 2012
    Date of Patent: June 17, 2014
    Inventors: Claude Belleville, Sebastien Lalancette, Nicolas Lessard
  • MINIATURE HIGH SENSITIVITY PRESSURE SENSOR
    Publication number: 20120227505
    Abstract: There is described a miniature fiber optic pressure sensor design where sensitivity around specific biased pressure is optimized. In an embodiment, the pressure sensor is a Fabry-Perot (FP) sensor which comprises a substrate; and a diaphragm mounted on the substrate. The diaphragm has a center and comprises: a first layer comprising a first material; and a second layer comprising a second material. The second layer forms a dot or a ring. The dot or ring is mounted on the first layer and is centered about the center of the diaphragm. The second material comprises internal pre-stresses to cause the center of the diaphragm (in the case of a dot) or the peripheral area about the center of the diaphragm (in the case of a ring) to camber away from the substrate upon relaxing the internal pre-stresses.
    Type: Application
    Filed: March 8, 2012
    Publication date: September 13, 2012
    Applicant: Opsens inc.
    Inventors: Claude Belleville, Sébastien Lalancette, Nicolas Lessard