Patents by Inventor Frédéric Chaput

Frédéric Chaput 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: 20240118471
    Abstract: An optical structure comprising at least one stack having a central filter (1) and two sandwiching optical elements (2,3) between which the central filter (1) is interposed, wherein the central filter (1) is in a matrix material. The matrix material being doped with at least one doping agent, the central filter (1) and the two optical elements (2,3) on either side thereof being assembled by bonding layers (4a, 4b) of a material based on the same matrix material as that of the central filter, the optical elements (2,3) on either side of the central filter (1) and the bonding layers (4a, 4b) each having a refractive index equal to that of the material of the central filter or only differing from this refractive index within a range of plus or minus 0.05, preferably within a range of plus or minus 0.02.
    Type: Application
    Filed: October 15, 2020
    Publication date: April 11, 2024
    Applicants: UNIVERSITE CALAUDE BERNARD LYON 1, CENTRE NATIONAL DE LA RECHERCHE SCIENTIFIQUE (CNRS), ECOLE NORMALE SUPERIEURE DE LYON
    Inventors: Stéphane PAROLA, Cesar LOPES, Denis CHATEAU, Frederic CHAPUT
  • Patent number: 9327993
    Abstract: The present invention relates to a method for preparing nanoparticles at least partially consisting of rare earth fluoride, characterized in that said fluoride is produced, in a solution, from a salt of the corresponding rare earth element and from a charge-transfer complex of formula (I), where Ra, Rb, and Rc are as defined in claim 1.
    Type: Grant
    Filed: June 21, 2010
    Date of Patent: May 3, 2016
    Assignees: UNIVERSITE CLAUDE BERNARD LYON I, CENTRE NATIONAL DE LA RECHERCHE SCIENTIFIQUE
    Inventors: Frédéric Chaput, Cédric Desroches, Stéphane Parola
  • Publication number: 20160040353
    Abstract: A method for depositing a photocatalytic coating on a support, the method having the steps: a) providing an aqueous and/or alcoholic suspension of nanoparticles of a semiconducting material, b) providing a sol in an aqueous and/or alcoholic solution of a hydrolyzed organosilane, c) mixing the suspension and the sol and proceeding with deposition of the obtained mixture on the support to be covered, d) performing a drying operation, e) and optionally producing an illumination of the obtained coating after drying at one wavelength at least causing activation of the semiconducting material, so as to remove at least 3% of the organic groups initially present in the coating and bound to the silicon atoms through a Si—C bond; as well as coatings with photocatalytic properties, materials, notably textiles, covered with such a coating and the use of such coatings and materials for photocatalysis.
    Type: Application
    Filed: April 7, 2014
    Publication date: February 11, 2016
    Applicants: Ecole Normale Superieure de Lyon, Universite Claude Bernard Lyon I, Centre National de la Recherche Scientifique
    Inventors: Damia GREGORI, Chantal GUILLARD, Frederic CHAPUT, Stephane PAROLA
  • Patent number: 8901185
    Abstract: The invention concerns a preparation process of a hybrid organic-inorganic material including the following successive steps: a) preparation of a neutral organosilicon sol in at least one organic solvent, b) incorporation of a doping agent into the neutral organosiliconsol, and production of a doped sol, c) incorporation into the doped sol, of an accelerating agent in order to activate the subsequent gelation of the sol, d) condensation of the sol in order to obtain a crosslinked gel, e) drying of the gel and production of a stable doped gel. and the material obtainable by such a method.
    Type: Grant
    Filed: April 12, 2011
    Date of Patent: December 2, 2014
    Assignees: Universite Claude Bernard Lyon I, Centre National de la Recherche Scientifique, FOI Swedish Defence Research Agency
    Inventors: Frédéric Chaput, Stéphane Parola, César Lopes, Denis Chateau, Cédric Desroches
  • Publication number: 20130131203
    Abstract: The invention concerns a preparation process of a hybrid organic-inorganic material including the following successive steps: a) preparation of a neutral organosilicon sol in at least one organic solvent, b) incorporation of a doping agent into the neutral organosiliconsol, and production of a doped sol, c) incorporation into the doped sol, of an accelerating agent in order to activate the subsequent gelation of the sol, d) condensation of the sol in order to obtain a crosslinked gel, e) drying of the gel and production of a stable doped gel. and the material obtainable by such a method.
    Type: Application
    Filed: April 12, 2011
    Publication date: May 23, 2013
    Applicants: Centre National De La Recherche Scientifique, Universite Claude Bernard I
    Inventors: Frédéric Chaput, Stéphane Parola, César Lopes, Denis Chateau, Cédric Desroches
  • Patent number: 8337788
    Abstract: A method for preparing a colloidal solution of non-aggregated zirconia particles, comprising the following steps: a) providing a zirconium hydroxide sol, b) adding to said sol an inorganic acid according to an [inorganic acid]/[Zr] molar ratio of <0.5, c) performing the hydrothermal treatment of said sol, and d) recovering the colloidal solution of zirconia particles.
    Type: Grant
    Filed: April 4, 2008
    Date of Patent: December 25, 2012
    Assignee: Essilor International (Compagnie Generale d'Optique)
    Inventors: Frédéric Chaput, Fabien Berit-Debat, Claudine Biver, Noémie Lesartre
  • Publication number: 20120164049
    Abstract: The present invention relates to a method for preparing nanoparticles at least partially consisting of rare earth fluoride, characterized in that said fluoride is produced, in a solution, from a salt of the corresponding rare earth element and from a charge-transfer complex of formula (I), where Ra, Rb, and Rc are as defined in claim 1.
    Type: Application
    Filed: June 21, 2010
    Publication date: June 28, 2012
    Applicants: CENTRE NATIONAL DE LA RECHERCHE-SCIENTIFIQUE, UNIVERSITE CLAUDE BERNARD LYON I
    Inventors: Frédéric Chaput, Cédric Desroches, Stéphana Parola
  • Publication number: 20100144918
    Abstract: A method for preparing a colloidal solution of non-aggregated zirconia particles, comprising the following steps: a) providing a zirconium hydroxide sol, b) adding to said sol an inorganic acid according to an [inorganic acid]/[Zr] molar ratio of <0.5, c) performing the hydrothermal treatment of said sol, and d) recovering the colloidal solution of zirconia particles.
    Type: Application
    Filed: April 4, 2008
    Publication date: June 10, 2010
    Applicant: Essilor International (Compagnie Generale d'Optique
    Inventors: Frederic Chaput, Fabien Berit-Debat, Claudine Biver, Noemie Lesartre
  • Patent number: 7560508
    Abstract: Anti-scratch coating composition containing anisotropic particles, a corresponding coated substrate and its application in ophthalmic optics.
    Type: Grant
    Filed: August 5, 2004
    Date of Patent: July 14, 2009
    Assignee: Essilor International Compagnie Generale d'Optique
    Inventors: Jérôme Douce, Frédéric Chaput, John Biteau, Gilles Hochstetter
  • Publication number: 20080199126
    Abstract: The method comprises emitting appropriate polarisation light waves on a photosensitive material for inducing therein a topographic modification through an aperture of at the most 100 mm bound by an opaque area, said layer being arranged at the most 100 mm away from the aperture.
    Type: Application
    Filed: February 5, 2008
    Publication date: August 21, 2008
    Applicant: ESSILOR INTERNATIONAL COMPAGNIE GENERAL D'OPTIQUE
    Inventors: Nathalie Landraud, Jacques Peretti, Frederic Chaput, Georges Lampel, Jean-Pierre Boilot, Khalid Lahlil, Viatcheslav Safarov
  • Patent number: 7407284
    Abstract: Methods of coating at least a portion of a curved surface of a lens with a polarizing liquid. One method includes providing a lens having a curved surface and a lens axis; and rotating the lens about a rotation axis such that a polarizing liquid flows over at least a portion of the curved surface; the rotation axis being offset from the lens axis. Other methods are included. Apparatuses include ophthalmic lenses having polarized coatings formed according to any of the disclosed methods.
    Type: Grant
    Filed: October 31, 2006
    Date of Patent: August 5, 2008
    Assignee: Essilor International Compagnie Generale d'Optique
    Inventors: Richard Muisener, Frederic Chaput, Herbert Mosse
  • Patent number: 7370963
    Abstract: An ophthalmic lens comprises a transparent substrate and electro-optical means integrated with the substrate to perform an optical function in response to an electrical stimulus. The ophthalmic lens further comprises at least one photovoltaic cell integrated with the substrate to power the electro-optical means in response to an incident light, and optionally also a control circuit for controlling the electrical voltage. The photovoltaic cell may be incorporated in an opaque element occupying a small fraction of the area of the lens. Alternatively, the photovoltaic cell may be transparent and may cover at least a portion of the area of the lens.
    Type: Grant
    Filed: June 10, 2005
    Date of Patent: May 13, 2008
    Assignee: Essilor International (Compagnie General d'Optique)
    Inventors: Jean-Paul Cano, Frédéric Chaput, Andreas F. Meyer, Toby B. Meyer
  • Patent number: 7352384
    Abstract: The invention generally concerns a method involving emitting polarization light waves through an aperture with a dimension of maximum size lower than or equal to 100 nm, wherein the aperture is circumferentially bound by an opaque area that prevents the light waves from being propagated outside the aperture during use, and wherein the emitted polarization light waves (1) contact a material layer comprising a photosensitive compound whose surface is located at a distance lower than 100 nm from said aperture, and (2) induce a topographic modification of the material layer. In this manner, a stable structure is printed in relief in the material layer without requiring any additional development step. The invention is applicable, in certain embodiments, to ophthalmic optics.
    Type: Grant
    Filed: July 26, 2002
    Date of Patent: April 1, 2008
    Assignee: Essilor International Compagnie Generale d'Optique
    Inventors: Nathalie Landraud, Jacques Peretti, Frédéric Chaput, Georges Lampel, Jean-Pierre Boilot, Khalid Lahlil, Viatcheslav Safarov
  • Publication number: 20070052921
    Abstract: Methods of coating at least a portion of a curved surface of a lens with a polarizing liquid. One method includes providing a lens having a curved surface and a lens axis; and rotating the lens about a rotation axis such that a polarizing liquid flows over at least a portion of the curved surface; the rotation axis being offset from the lens axis. Other methods are included. Apparatuses include ophthalmic lenses having polarized coatings formed according to any of the disclosed methods.
    Type: Application
    Filed: October 31, 2006
    Publication date: March 8, 2007
    Inventors: Richard Muisener, Frederic Chaput, Herbert Mosse
  • Patent number: 7157518
    Abstract: The method consists in hydrolysing an initial volume Vse of a precursor material comprising at least one polyalkoxysilane with a quantity of water such that x ? ? H 2 ? O x ? ? Si ? 10 , ? and where x H20 and x Si represent the number of moles of H20 and Si present, respectively, the concentration of the hydrolysate up to a volume substantially equal to the initial volume Vsi, leaving the concentrated hydrolysate until segregation into an aqueous phase and an organo-silicon phase, and recovery of the organo-silicon phase. A product can be obtained which comprises an organo-silicon sol comprising silicon species T1, T2, and T3, wherein the molar fraction of species T2 is equal or greater than 50%, comprising a condensation rate equal to or greater than 0.65, and further defined as lacking water, as determined by analyzing a sample of said organo-silicon sol by 1H NMR and observing the absence of peak corresponding to water.
    Type: Grant
    Filed: June 30, 2003
    Date of Patent: January 2, 2007
    Assignee: Essilor International Compagnie Generale d'Optique
    Inventors: John Biteau, Jean-Pierre Boilot, Frédéric Chaput
  • Patent number: 7128414
    Abstract: Methods of coating at least a portion of a curved surface of a lens with a polarizing liquid. One method includes providing a lens having a curved surface and a lens axis; and rotating the lens about a rotation axis such that a polarizing liquid flows over at least a portion of the curved surface; the rotation axis being offset from the lens axis. Other methods are included. Apparatuses include ophthalmic lenses having polarized coatings formed according to any of the disclosed methods.
    Type: Grant
    Filed: December 24, 2003
    Date of Patent: October 31, 2006
    Assignee: Essilor International Compagnie Cenerale d'Optique
    Inventors: Richard Muisener, Frederic Chaput, Herbert Mosse
  • Publication number: 20050280769
    Abstract: An ophthalmic lens comprises a transparent substrate and electro-optical means integrated with the substrate to perform an optical function in response to an electrical stimulus. The ophthalmic lens further comprises at least one photovoltaic cell integrated with the substrate to power the electro-optical means in response to an incident light, and optionally also a control circuit for controlling the electrical voltage. The photovoltaic cell may be incorporated in an opaque element occupying a small fraction of the area of the lens. Alternatively, the photovoltaic cell may be transparent and may cover at least a portion of the area of the lens.
    Type: Application
    Filed: June 10, 2005
    Publication date: December 22, 2005
    Inventors: Jean-Paul Cano, Frederic Chaput, Andreas Meyer, Toby Meyer
  • Publication number: 20050142350
    Abstract: Anti-scratch coating composition containing anisotropic particles, a corresponding coated substrate and its application in ophthalmic optics
    Type: Application
    Filed: August 5, 2004
    Publication date: June 30, 2005
    Applicant: Essilor International Compagnie Generale d'Optique
    Inventors: Jerome Douce, Frederic Chaput, John Biteau, Gilles Hochstetter
  • Publication number: 20040214115
    Abstract: A method for printing a near field photoinduced stable structure, and an optical fibre tip for implementing same.
    Type: Application
    Filed: January 26, 2004
    Publication date: October 28, 2004
    Inventors: Nathalie Landraud, Jacques Peretti, Frederic Chaput, Georges Lampel, Jean-Pierre Boilot, Khalid Lahlil, Viatcheslav Safarov
  • Publication number: 20040059052
    Abstract: The method consists in hydrolysing an initial volume Vsi of a precursor material comprising at least one polyalkoxysilane with a quantity of water such that 1 x ⁢   ⁢ H 2 ⁢ O x ⁢   ⁢ Si ≥ 10
    Type: Application
    Filed: June 30, 2003
    Publication date: March 25, 2004
    Inventors: John Biteau, Jean-Pierre Boilot, Frederic Chaput