Patents by Inventor Myriam Zerrad

Myriam Zerrad 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).

  • Publication number: 20220266505
    Abstract: The method for manufacturing a three-dimensional object or for modifying the surface state of a preformed object by local polymerisation of monomers or oligomers, the polymerisation being initiated by mono-photon or multi-photon absorption in an area to be polymerised, includes: —introducing into a vessel with light-transparent walls a reaction medium comprising polymerisable monomers or oligomers, a polymerisation inhibitor, an indicator of the amount of the inhibitor and a photochemical polymerisation initiator; —initiating the polymerisation of the monomers or oligomers; —indicating the amount of inhibitor present in the reaction medium; —controlling the amount of light emitted by the irradiation system relative to the amount of inhibitor indicated by the indicator; and —switching to a following zone to be polymerised by moving the object and/or the focused light beam.
    Type: Application
    Filed: July 22, 2020
    Publication date: August 25, 2022
    Applicants: CENTRE NATIONAL DE LA RECHERCHE SCIENTIFIQUE (CNRS), UNIVERSITE D'AIX-MARSEILLE (AMU), ECOLE CENTRALE DE MARSEILLE
    Inventors: Claude Amra, Jean-Claude André, Laurent Gallais-During, Myriam Zerrad
  • Patent number: 10627227
    Abstract: The invention relates to an optical device for characterization of a sample (3) comprising —a source (5) of parallel or collimated light, having an emission spectrum that is continuous over an observation wavelength range of at least 50 nm width, for illuminating the sample (3), —a detector (7) of light scattered by the sample (3), operating in said observation wavelength range, —a filter (9) for specific spectral weighting arranged on an optical path upstream of the detector (7) of the scattered light, and —a processing unit (11) for processing the measurement signal in order to extract a characterization parameter of the sample (3).
    Type: Grant
    Filed: September 16, 2016
    Date of Patent: April 21, 2020
    Assignees: Centre National de la Recherche Scientifique, UNIVERSITÉ D'AIX-MARSEILLE
    Inventors: Myriam Zerrad, Michel Lequime, Claude Amra
  • Patent number: 10444485
    Abstract: A contrast-amplifying support for the observation of a sample, comprises a transparent substrate carrying at least one absorbing layer whose complex refractive index N1=n1?jk1 and thickness are chosen in such a way that the layer behaves in the guise of antireflection layer when it is illuminated under normal incidence at an illumination wavelength ? through the substrate, the face of the layer opposite to the d substrate being in contact with a transparent so-called ambient medium whose refractive index n3 is less than that of the refractive index n0 of the substrate. Methods for producing a contrast-amplifying support and for observing a sample, or for detecting or assaying at least one chemical or biological species, using such a contrast-amplifying support are provided.
    Type: Grant
    Filed: October 17, 2014
    Date of Patent: October 15, 2019
    Assignees: CENTRE NATIONAL DE LA RECHERCHE SCIENTIFIQUE, UNIVERSITE DU MAINE
    Inventors: Dominique Ausserre, Claude Amra, Myriam Zerrad, Refahi Abou Khachfe
  • Publication number: 20190212274
    Abstract: The invention relates to an optical device for characterization of a sample (3) comprising—a source (5) of parallel or collimated light, having an emission spectrum that is continuous over an observation wavelength range of at least 50 nm width, for illuminating the sample (3),—a detector (7) of light scattered by the sample (3), operating in said observation wavelength range,—a filter (9) for specific spectral weighting arranged on an optical path upstream of the detector (7) of the scattered light, and—a processing unit (11) for processing the measurement signal in order to extract a characterization parameter of the sample (3).
    Type: Application
    Filed: September 16, 2016
    Publication date: July 11, 2019
    Inventors: Myriam ZERRAD, Michel LEQUIME, Claude AMRA
  • Patent number: 10295822
    Abstract: A method for producing a contrast-amplifying support comprising an absorbing substrate carrying at least one absorbing layer comprises a design step for the support and the following steps: i) choosing an illumination wavelength ?; ii) choosing a material constituting the substrate and exhibiting, at illumination wavelength ?, a complex refractive index N0=n0?jk0 with k0?0.01; iii) choosing an ambient medium in contact with the layer on the side opposite to the substrate and exhibiting, at illumination wavelength ?, a complex refractive index N3=n3?jk3 with k3?0; iv) determining a nominal complex refractive index N1=n1?jk1 and a nominal thickness e1 of the layer wherein it behaves in the guize of antireflection layer when illuminated under normal incidence at illumination wavelength ?; and v) choosing a material constituting the layer and exhibiting, at illumination wavelength ?, a complex refractive index whose real and imaginary parts coincide with the nominal complex refractive index.
    Type: Grant
    Filed: October 17, 2014
    Date of Patent: May 21, 2019
    Assignees: CENTRE NATIONAL DE LA RECHERCHE SCIENTIFIQUE, UNIVERSITE DU MAINE
    Inventors: Dominique Ausserre, Claude Amra, Myriam Zerrad, Refahi Abou Khachfe
  • Patent number: 10241311
    Abstract: The invention relates to a method for observing a sample under optical microscopy, in incoherent, unpolarised light, using a sample substrate including a contrast-amplifying layer having a complex index of refraction. The invention also relates to a method for detecting or metering at least one chemical or biological species using such a sample substrate.
    Type: Grant
    Filed: July 26, 2013
    Date of Patent: March 26, 2019
    Assignees: Centre National de la Recherche Scientifique, Universite du Maine, Universite d'Aix-Marseille
    Inventors: Dominique Ausserré, Ludovic Roussille, Myriam Zerrad, Fabien Lemarchand, Claude Amra
  • Publication number: 20160299328
    Abstract: A contrast-amplifying support for the observation of a sample, comprises a transparent substrate carrying at least one absorbing layer whose complex refractive index N1=n1?jk1 and thickness are chosen in such a way that the layer behaves in the guise of antireflection layer when it is illuminated under normal incidence at an illumination wavelength ? through the substrate, the face of the layer opposite to the d substrate being in contact with a transparent so-called ambient medium whose refractive index n3 is less than that of the refractive index n0 of the substrate. Methods for producing a contrast-amplifying support and for observing a sample, or for detecting or assaying at least one chemical or biological species, using such a contrast-amplifying support are provided.
    Type: Application
    Filed: October 17, 2014
    Publication date: October 13, 2016
    Inventors: Dominique AUSSERRE, Claude AMRA, Myriam ZERRAD, Refahi ABOU KHACHFE
  • Publication number: 20160282611
    Abstract: A method for producing a contrast-amplifying support comprising an absorbing substrate carrying at least one absorbing layer comprises a design step for the support and the following steps: i) choosing an illumination wavelength ?; ii) choosing a material constituting the substrate and exhibiting, at illumination wavelength ?, a complex refractive index N0=n0?jk0 with k0?0.01; iii) choosing an ambient medium in contact with the layer on the side opposite to the substrate and exhibiting, at illumination wavelength ?, a complex refractive index N3=n3?jk3 with k3?0; iv) determining a nominal complex refractive index N1=n1?jk1 and a nominal thickness e1 of the layer wherein it behaves in the guise of antireflection layer when illuminated under normal incidence at illumination wavelength ?; and v) choosing a material constituting the layer and exhibiting, at illumination wavelength ?, a complex refractive index whose real and imaginary parts coincide with the nominal complex refractive index.
    Type: Application
    Filed: October 17, 2014
    Publication date: September 29, 2016
    Applicant: CENTRE NATIONAL DE LA RECHERCHE SCIENTIFIQUE
    Inventors: Dominique AUSSERRE, Claude AMRA, Myriam ZERRAD, Refahi ABOU KHACHFE
  • Publication number: 20150185457
    Abstract: The invention relates to a method for observing a sample under optical microscopy, in incoherent, unpolarised light, using a sample substrate including a contrast-amplifying layer having a complex index of refraction. The invention also relates to a method for detecting or metering at least one chemical or biological species using such a sample substrate.
    Type: Application
    Filed: July 26, 2013
    Publication date: July 2, 2015
    Inventors: Dominique Ausserre, Ludovic Roussille, Myriam Zerrad, Fabien Lemarchand, Claude Amra