Patents by Inventor Jean-Louis Martin
Jean-Louis Martin 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).
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Patent number: 9411140Abstract: A method and system for calibrating an optical device having a spatial optical modulator (6) and including: an optical lens (8) of a large numerical aperture, capable of receiving an incident beam and/or collecting an optical beam reflected by a sample; a camera (14) disposed in a plane optically conjugate with the focal plane of the lens (8); and a spatial optical modulator (6) disposed on the optical beam upstream of the camera (14). The method includes the following steps consisting in: acquiring three-dimensional images of the PSF in terms of intensity in a plane conjugate with the focal plane of the lens (8), reconstructing the profile in terms of amplitude and/or phase of the beam using a phase diversity algorithm, and determining the respective influence functions of a plurality of elements P1, . . . , PN of the spatial optical modulator (6) on the profile in terms of the amplitude A and/or phase ? of the beam.Type: GrantFiled: November 21, 2011Date of Patent: August 9, 2016Assignee: ECOLE POLYTECHNIQUEInventors: Delphine Debarre, Thibault Vieille, Emmanuel Beaurepaire, Jean-Louis Martin
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Publication number: 20140367591Abstract: A module is provided for a multi-photon imaging system for simultaneously exciting chromophores of a specimen. A first femtosecond laser source emits a first pulsed excitation beam having a repetition rate 1/T and a wavelength ?1 exciting a first chromophores, the absorbed photons originating from the first excitation beam. A second femtosecond laser source emits a second pulsed excitation beam with a wavelength ?2 exciting a second chromophores, the absorbed photons originating from the second beam; the first beam including an “excitation” part exciting the specimen and a “pumping” part acting as a pump beam for exciting the second laser source to synchronize the second laser source with the first laser source. An optical delay line superimposes spatially and temporally the second beam and the excitation part of the first beam to excite at least a third chromophore, the absorbed photons originating from the first and second excitation beams.Type: ApplicationFiled: February 1, 2013Publication date: December 18, 2014Inventors: Pierre Mahou, Emmanuel Jean Marc Beaurepaire, Delphine Debarre, Willy Supatto, Jean Louis Martin
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Publication number: 20130278744Abstract: A method and system for calibrating an optical device having a spatial optical modulator (6) and including: an optical lens (8) of a large numerical aperture, capable of receiving an incident beam and/or collecting an optical beam reflected by a sample; a camera (14) disposed in a plane optically conjugate with the focal plane of the lens (8); and a spatial optical modulator (6) disposed on the optical beam upstream of the camera (14). The method includes the following steps consisting in: acquiring three-dimensional images of the PSF in terms of intensity in a plane conjugate with the focal plane of the lens (8), reconstructing the profile in terms of amplitude and/or phase of the beam using a phase diversity algorithm, and determining the respective influence functions of a plurality of elements P1, . . . , PN of the spatial optical modulator (6) on the profile in terms of the amplitude A and/or phase ? of the beam.Type: ApplicationFiled: November 21, 2011Publication date: October 24, 2013Applicant: ECOLE POLYTECHNIQUEInventors: Delphine Debarre, Thibault Vieille, Emmanuel Beaurepaire, Jean-Louis Martin
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Patent number: 8284483Abstract: A method for acquiring signals in laser scanning microscopy, includes the steps of: moving a focused optical excitation beam relative to an object to be measured so that the focus point of the beam follows a predetermined path in the space of the object; and acquiring optical measurement signals along the path according to at least one acquisition parameter; characterized in that the path of the excitation beam is determined so as to substantially minimize the variations of the optical properties of at least one portion of the environments crossed by the excitation beam between consecutive acquisitions, and in that at least one acquisition parameter among the acquisition parameters is modulated during the movement of the excitation beam. A device for implementing the method is also described.Type: GrantFiled: February 3, 2010Date of Patent: October 9, 2012Assignee: Ecole PolytechniqueInventors: Emmanuel Jean-Marc Beaurepaire, Israel Veilleux, Nicolas Olivier, Delphine Malvina Daniele Marie Debarre, Jean-Louis Martin
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Patent number: 8227767Abstract: A method for the dimensional characterization of a structured material, in which method: an excitation laser beam suitable for coherent nonlinear microscopy is generated, this excitation laser beam being focused in a focal volume within the structured material; signals emitted by the structured material are detected; a plurality of emission patterns, each corresponding to one particular shape of the focal volume, is produced, the particular shapes being obtained for various non-Gaussian spatial profiles of the excitation laser beam wavefront; and on the basis of the emission patterns thus produced, dimensional characteristics of the structured material are deduced therefrom.Type: GrantFiled: June 26, 2009Date of Patent: July 24, 2012Assignee: Ecole PolytechniqueInventors: Emmanuel Jean-Marc Beaurepaire, Nicolas Olivier, Delphine Debarre, Marie-Claire Schanne-Klein, Jean-Louis Martin
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Publication number: 20110296562Abstract: A method for acquiring signals in laser scanning microscopy, includes the steps of: moving a focused optical excitation beam relative to an object to be measured so that the focus point of the beam follows a predetermined path in the space of the object; and acquiring optical measurement signals along the path according to at least one acquisition parameter; characterised in that the path of the excitation beam is determined so as to substantially minimise the variations of the optical properties of at least one portion of the environments crossed by the excitation beam between consecutive acquisitions, and in that at least one acquisition parameter among the acquisition parameters is modulated during the movement of the excitation beam. A device for implementing the method is also described.Type: ApplicationFiled: February 3, 2010Publication date: December 1, 2011Applicant: ECOLE POLYTECHNIQUEInventors: Emmanuel Jean-Marc Beaurepaire, Israël Veilleux, Nicolas Olivier, Delphine Malvina Danièle Marie Debarre, Jean-Louis Martin
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Publication number: 20110147616Abstract: A method for the dimensional characterization of a structured material, in which method: an excitation laser beam suitable for coherent nonlinear microscopy is generated, this excitation laser beam being focused in a focal volume within the structured material; signals emitted by the structured material are detected; a plurality of emission patterns, each corresponding to one particular shape of the focal volume, is produced, the particular shapes being obtained for various non-Gaussian spatial profiles of the excitation laser beam wavefront; and on the basis of the emission patterns thus produced, dimensional characteristics of the structured material are deduced therefrom.Type: ApplicationFiled: June 26, 2009Publication date: June 23, 2011Applicant: ECOLE POLYTECHNIQUEInventors: Emmanuel Jean-Marc Beaurepaire, Nicolas Olivier, Delphine Debarre, Marie-Claire Schanne-Klein, Jean-Louis Martin
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Patent number: 7259118Abstract: A method for insulating an article requiring resistance against repeated exposure to temperatures exceeding 900° C. uses saline soluble, non-metallic, amorphous, inorganic oxide, refractory fibrous materials as thermal insulation. The compositions that can be used for that purpose include vitreous fibers based on SiO2, CaO, MgO, and optionally, A2O3.Type: GrantFiled: April 28, 2004Date of Patent: August 21, 2007Assignee: The Morgan Crucible Company PLCInventors: Gary Anthony Jubb, Jean-Louis Martin
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Patent number: 6987076Abstract: A composite material comprises inorganic-bonded alkaline earth silicate fibers in which any bonding agents or fillers comprise low amounts of aluminum so that the composite material comprises less than 1% by weight aluminum expressed as Al2—O3.Type: GrantFiled: September 14, 1999Date of Patent: January 17, 2006Assignee: The Morgan Crucible Company plcInventors: Gary Anthony Jubb, Jean-Louis Martin, Jane Miller, Arlette Wotovic, Lindsay John Harold Todd
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Patent number: 6861381Abstract: A fibre is disclosed having a maximum use temperature of 1200° C. or more which comprises: SiO2>64.25 wt % CaO>18 wt % MgO<17 wt % and in which the amount of MgO in mol % is greater than the amount of CaO in mol %. Such fibers have high solubility and low dustiness.Type: GrantFiled: August 24, 2000Date of Patent: March 1, 2005Assignee: The Morgan Crucible Company PLCInventors: Gary Anthony Jubb, Jean-Louis Martin
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Publication number: 20050014624Abstract: Disclosed is use of a vitreous inorganic fiber in the knowledge that it has a composition meeting the criterion that the calculated sum of the free energies of hydration of the compounds that would or could be present at equilibrium (on the basis of knowledge, informed belief or reasonable assumption) is more negative than ?10 kcal/100 grams of composition. Such compositions are saline soluble.Type: ApplicationFiled: April 28, 2004Publication date: January 20, 2005Inventors: Gary Jubb, Jean-Louis Martin
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Publication number: 20040248195Abstract: The invention is relative to the various uses of a novel enzyme family, referred to as THYX, capable of catalyzing the synthesis of thymidine 5′-monophosphate in the absence of an active thymidylate synthase enzyme (ThyA).Type: ApplicationFiled: July 19, 2004Publication date: December 9, 2004Inventors: Hannu Myllykallio, Ursula Liebl, Damien Leduc, Gerard Lipowski, Jean-Louis Martin
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Patent number: 6180546Abstract: Disclosed is use of a vitreous inorganic fiber in the knowledge that it has a composition meeting the criterion that the calculated sum of the free energies of hydration of the compounds that would or could be present at equilibrium (on the basis of knowledge, informed belief or reasonable assumption) is more negative than −10 kcal/100 grams of composition. Such compositions are saline soluble.Type: GrantFiled: March 4, 1999Date of Patent: January 30, 2001Assignee: The Morgan Crucible Company plcInventors: Gary Anthony Jubb, Jean-Louis Martin
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Patent number: 6085352Abstract: A goaltender's blocker has an articulated blocking pad made of segments attached to each other by means of hinges. One result of this construction is to allow the lower end of the blocking pad to pivot outwardly when pressed against the playing surface, so as to allow the goaltender to perform the paddle-down maneuver in a comfortable, ergonomically correct and technically sound manner.Type: GrantFiled: May 13, 1999Date of Patent: July 11, 2000Inventor: Jean-Louis Martin
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Patent number: 5994247Abstract: Disclosed is use of a vitreous inorganic fiber in the knowledge that it has a composition meeting the criterion that the calculated sum of the free energies of hydration of the compounds that would or could be present at equilibrium (on the basis of knowledge, informed belief or reasonable assumption) is more negative than -10 kcal/100 grams of composition. Such compositions are saline soluble.Type: GrantFiled: July 23, 1997Date of Patent: November 30, 1999Assignee: The Morgan Crucible Company plcInventors: Gary Anthony Jubb, Jean-Louis Martin