Patents by Inventor André Nazac

André Nazac 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: 12527516
    Abstract: A method of quantifying progression of pregnancy, includes a) illuminating a uterine cervix with polarized light having a wavelength comprised between 600 and 1100 nm; b) acquiring a plurality of images of the illuminated uterine cervix through a polarization state analyser in respective analysing states; steps a) and b) being performed either once or a plurality of time using polarized light having different polarization states; c) from the acquired images, computing a depolarization parameter over a region of interest of the uterine cervix; and d) quantifying the progression of the pregnancy from said depolarization parameter. An apparatus, based on a colposcope fitted with a controllable polarization state generator, a controllable polarization state analyser and a suitably-programmed computer, for carrying out such a method. A computer program for carrying out such a method.
    Type: Grant
    Filed: June 29, 2020
    Date of Patent: January 20, 2026
    Assignees: CENTRE NATIONAL DE LA RECHERCHE SCIENTIFIQUE, ECOLE POLYTECHNIQUE, CHU BRUGMANN
    Inventors: Angelo Pierangelo, Jérémy Vizet, Jean Rehbinder, André Nazac
  • Publication number: 20220370002
    Abstract: A method of quantifying progression of pregnancy, includes a) illuminating a uterine cervix with polarized light having a wavelength comprised between 600 and 1100 nm; b) acquiring a plurality of images of the illuminated uterine cervix through a polarization state analyser in respective analysing states; steps a) and b) being performed either once or a plurality of time using polarized light having different polarization states; c) from the acquired images, computing a depolarization parameter over a region of interest of the uterine cervix; and d) quantifying the progression of the pregnancy from said depolarization parameter. An apparatus, based on a colposcope fitted with a controllable polarization state generator, a controllable polarization state analyser and a suitably-programmed computer, for carrying out such a method. A computer program for carrying out such a method.
    Type: Application
    Filed: June 29, 2020
    Publication date: November 24, 2022
    Inventors: Angelo PIERANGELO, Jérémy VIZET, Jean REHBINDER, André NAZAC
  • Patent number: 8214024
    Abstract: An electronic polarimetric imaging system for a colposcopy device designed for in vivo observation of a cervix, wherein the colposcopy device includes a light source for illuminating the observable cervix and at least visual elements for monitoring an image of the cervix, the illumination optical path towards the cervix and the image optical path coming back from the cervix being separated from one another over at least one portion of the paths thereof. The system includes a polarimetric adapter housing which is removable into the separated portion of the illumination and image optical paths, the polarimetric adapter housing including a polarisation state generator (PSG) on the illumination optical path and a polarisation analyser (PSA) on the image optical path, wherein the polarisation state generator (PSG) and the polarisation analyser (PSA) are controllable. Several levels of polarimetric characterisation are possible. An adaptor housing is also disclosed.
    Type: Grant
    Filed: June 27, 2006
    Date of Patent: July 3, 2012
    Assignees: Ecole Polytechnique, Assistance Publique-Hopitaux de Paris, Institut Mutualiste Montsouris
    Inventors: Antonello De Martino, Bernard Drevillon, Laurent Schwartz, André Nazac, Bernard Huynh