Patents by Inventor Philippe Tailhades
Philippe Tailhades 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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Publication number: 20230058595Abstract: A process for manufacturing a multi-material part by additive manufacturing, includes the following steps: a) a step of providing a pre-treated metal powder comprising grains and an oxidized and porous layer on a surface of the grains; b) a selective laser powder-bed fusion step comprising implementation of steps i) and ii) as follows: i) a step of forming a layer from the pre-treated metal powder; ii) a step of melting by laser the layer, the melting step being carried out under a reactive atmosphere and comprising changing parameters of application of the laser so that at least a first region of the layer is converted so as to lower the electrical conductivity thereof, thus forming a dielectric, and so that at least a second region of the layer is densified without converting it, the at least a first region being formed when the parameters of application of the laser allow a first energy density to be applied to the first region and/or the laser beam to be kept for a first dwell time on the first region, thType: ApplicationFiled: January 22, 2021Publication date: February 23, 2023Inventors: Frédéric VERON, Olivier VENDIER, Philippe TAILHADES, Valérie BACO-CARLES, Kateryna KIRYUKHINA
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Publication number: 20190106790Abstract: The invention relates to a process for the manufacture of a metal, ceramic or composite part or of a supported metal, ceramic or composite microstructure by laser irradiation starting from metal oxalates, and also to the part and the microstructure obtained by said process, and to their uses.Type: ApplicationFiled: December 14, 2016Publication date: April 11, 2019Inventors: Valérie BACO, Philippe TAILHADES, Hoa LE TRONG, Isabelle PASQUET, Pierre-François CALMON, Henri CAMON, Véronique CONEDERA
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Patent number: 9376346Abstract: The invention relates to the use of a material having a spinel ferrite/iron monoxide structure as a sensitive material in the form of a thin film for the bolometric detection of infrared radiation, the chemical composition of said structure, excluding doping agents that may be present, having empirical formula (I): (Fe1?zMz)xO, where x is strictly less than 1 and strictly greater than 0.75. The invention also relates to a bolometric device for infrared radiation detection and infrared imaging, comprising at least one sensor provided with a sensitive element in the form of a thin film as defined above.Type: GrantFiled: June 11, 2009Date of Patent: June 28, 2016Assignees: COMMISSARIAT A L'ENERGIE ATOMIQUE, UNIVERSITE PAUL SABATIER (TOULOUSE III), CENTRE NATIONAL DE LA RECHERCHE SCIENTIFIQUEInventors: Philippe Tailhades, Lionel Presmanes, Corinne Bonningue, Bruno Mauvernay, Jean-Louis Ouvrier-Buffet, Agnes Arnaud, Wilfried Rabaud
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Patent number: 9108277Abstract: A process for manufacturing a device comprising at least a support and a component, joined together by at least one braze, includes a brazing operation which is carried out starting from a metal oxalate. Advantageously, it is a silver oxalate or a mixture of silver and copper oxalates, the component and/or the support being covered with a film comprising gold or copper in contact with said braze and the component possibly being a power component.Type: GrantFiled: June 29, 2012Date of Patent: August 18, 2015Assignees: THALES, UNIVERSITE PAUL SEBATIER TOULOUSE III, CENTRE NATIONAL DE LA RECHERCHE SCIENTIFIQUEInventors: Olivier Vendier, Lidwine Raynaud, Valérie Baco, Michel Gougeon, Hoa Le Trong, Philippe Tailhades
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Publication number: 20130001275Abstract: A process for manufacturing a device comprising at least a support and a component, joined together by at least one braze, includes a brazing operation which is carried out starting from a metal oxalate. Advantageously, it is a silver oxalate or a mixture of silver and copper oxalates, the component and/or the support being covered with a film comprising gold or copper in contact with said braze and the component possibly being a power component.Type: ApplicationFiled: June 29, 2012Publication date: January 3, 2013Applicants: THALES, CENTRE NATIONAL DE LA RECHERCHE SCIENTIFIQUE, UNIVERSITE PAUL SABATIER TOULOUSE IIIInventors: Olivier VENDIER, Lidwine RAYNAUD, Valérie BACO, Michel GOUGEON, Hoa LE TRONG, Philippe TAILHADES
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Patent number: 8017911Abstract: The present invention relates to the use as a sensitive material in a thin layer for bolometric detection of infrared radiation, of a material having a spinel ferrite structure of chemical composition, ignoring doping agents if any are present, satisfying empirical formula I: Fe3-(x+y)MxAyO4+?. The invention also provides a bolometric device for detecting infrared radiation or for infrared imaging, and including at least one sensor provided with a sensitive element in the form of a thin layer as defined above.Type: GrantFiled: December 15, 2004Date of Patent: September 13, 2011Assignees: Universite Paul Sabatier (Toulouse III), Centre National de la Recherche Scientifique, Commissariat a l'Energie AtomiqueInventors: Philippe Tailhades, Lionel Presmanes, Corinne Bonningue, Jean-Louis Ouvrier-Buffet, Astrid Astier, Stephanie Capdeville, Claire Vialle, Pierre Imperinetti
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Publication number: 20100065743Abstract: The invention relates to the use of a material having a spinel ferrite/iron monoxide structure as a sensitive material in the form of a thin film for the bolometric detection of infrared radiation, the chemical composition of said structure, excluding doping agents that may be present, having empirical formula (I): (Fe1?zMz)xO, where x is strictly less than 1 and strictly greater than 0.75. The invention also relates to a bolometric device for infrared radiation detection and infrared imaging, comprising at least one sensor provided with a sensitive element in the form of a thin film as defined above.Type: ApplicationFiled: June 11, 2009Publication date: March 18, 2010Applicants: COMMISSARIAT A L'ENERGIE ATOMIQUE, UNIVERSITE PAUL SABATIER TOULOUSE III, CENTRE NATIONAL DE LA RECHERCHE SCIENTIFIQUEInventors: Philippe TAILHADES, Lionel PRESMANES, Corinne BONNINGUE, Bruno MAUVERNAY, Jean-Louis OUVRIER-BUFFET, Agnes ARNAUD, Wilfried RABAUD
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Patent number: 7425284Abstract: The purpose of the invention is a process for making a solid part designed to form all or part of an anode for the production of aluminium by fused bath electrolysis, containing a cermet formed from at least one metallic oxide such as a mixed oxide with spinel structure, and at least one metallic phase, in which a mixed oxide is used containing a metal R in the form of a cation in its chemical structure, the said metal R being fully or partly reducible by a reduction operation during the manufacturing process, so as to form all or part of the said metallic phase. This process can provide a cermet with a uniform distribution of fine metallic particles.Type: GrantFiled: October 5, 2004Date of Patent: September 16, 2008Assignee: Aluminum PechineyInventors: Philippe Tailhades, Abel Rousset, Armand Gabriel, Véronique Laurent, Valérie Baco-Carles, Airy-Pierre Lamaze
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Patent number: 7368146Abstract: A magneto-optical recording medium has a recording layer and a reflective layer on a substrate. The recording layer has a layered structure in which at least one spinel ferrite (or rutile-type oxide or hematite) layer and at least one garnet ferrite layer are piled together. It is preferable that the layered structure is formed on tracks where data are recorded. A manufacturing method comprises the steps of heat treatment in the range of 500-700° C., preferably 600-630° C., after the formation of the recording layer. In the magneto-optical recording and playback device to record and play back data, the wavelength of light for recording data is different from that for reading data, which is preferable for a magneto-optical recording medium comprising a garnet ferrite layer.Type: GrantFiled: June 26, 2006Date of Patent: May 6, 2008Assignees: Nippon Telegraph and Telephone Corporation, The Centre National de la Recherche ScientifiqueInventors: Akinori Furuya, Hiroshi Yoshikawa, Takaya Tanabe, Manabu Yamamoto, Toshifumi Ohkubo, Laurence Bouet, Philippe Tailhades, Corine Despax, Abel Rousset
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Publication number: 20070120059Abstract: The present invention relates to the use as a sensitive material in a thin layer for bolometric detection of infrared radiation, of a material having a spinel ferrite structure of chemical composition, ignoring doping agents if any are present, satisfying empirical formula I: Fe3?(x+y)MxAyO4+???(I) The invention also provides a bolometric device for detecting infrared radiation or for infrared imaging, and including at least one sensor provided with a sensitive element in the form of a thin layer as defined above.Type: ApplicationFiled: December 15, 2004Publication date: May 31, 2007Applicants: UNIVERSITE PAUL SABATIER (TOULOUSE 111), CENTRE NATIONAL DE LA RECHERCHE SCIENTIFIQUE, COMMISSARIAT A L'ENERGIE ATOMIQUEInventors: Philippe Tailhades, Lionel Presmanes, Corinne Bonningue, Jean-Louis Ouvrier-Buffet, Astrid Astier, Stephanie Capdeville, Claire Vialle, Pierre Imperinetti
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Publication number: 20070056848Abstract: The purpose of the invention is a process for making a solid part designed to form all or part of an anode for the production of aluminium by fused bath electrolysis, containing a cermet formed from at least one metallic oxide such as a mixed oxide with spinel structure, and at least one metallic phase, in which a mixed oxide is used containing a metal R in the form of a cation in its chemical structure, the said metal R being fully or partly reducible by a reduction operation during the manufacturing process, so as to form all or part of the said metallic phase. This process can provide a cermet with a uniform distribution of fine metallic particles.Type: ApplicationFiled: October 5, 2004Publication date: March 15, 2007Inventors: Philippe Tailhades, Abel Rousset, Armand Gabriel, Veronique Laurent, Valerie Baco-Carles, Airy-Pierre Lamaze
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Publication number: 20060286411Abstract: This invention relates to magneto-optical recording media such as magneto-optical disks and cards, manufacturing methods of the medium and a magneto-optical recording and playback device to record and play back data using the magneto-optical recording media. The magneto-optical recording medium of the present invention has a recording layer and a reflective layer on a substrate, and the recording layer has a layered structure in which at least one spinel ferrite (or rutile-type oxide or hematite) layer and at least one garnet ferrite layer are piled together. It is preferable that the layered structure is formed on tracks where data are recorded. The manufacturing method of the present invention comprises the steps of heat treatment in the range of 500-700° C., preferably 600-630° C., after the formation of the recording layer.Type: ApplicationFiled: June 26, 2006Publication date: December 21, 2006Inventors: Akinori Furuya, Hiroshi Yoshikawa, Takaya Tanabe, Manabu Yamamoto, Toshifumi Ohkubo, Laurence Bouet, Philippe Tailhades, Corine Despax-Bonningue, Abel Rousset
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Publication number: 20050014097Abstract: The present invention relates to a method of recording data in digital form on a write-once read-many optical medium comprising a sensitive film based on a metal oxide of the oxidizable spinel type. Regions of the sensitive film are heated, locally and in succession, under conditions allowing oxidation of the oxidizable metal ions of the oxide. In the optical medium thus recorded, the virgin regions, which are not modified by the write operation, are oxidizable and change color after heat treatment in an oxidizing atmosphere.Type: ApplicationFiled: November 8, 2002Publication date: January 20, 2005Inventors: Philippe Tailhades, Corinne Bonningue, Isabelle Pasquet, Lionel Presmanes
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Publication number: 20040197604Abstract: This invention relates to magneto-optical recording media such as magneto-optical disks and cards, manufacturing methods of the medium and a magneto-optical recording and playback device to record and play back data using the magnetic-optical recording media. The magneto-optical recording medium has a recording layer and a reflective layer on a substrate, and the recording layer has a layered structure in which at least on spinel ferrite (or rutile-type oxide or hematite) layer and at least one garnet ferrite layer are piled together. The manufacturing method comprises the steps of heat treatment after the formation of the recording layer. In the magneto-optical recording and playback device to record and playback data, the wavelength of light for recording data is different from that for reading data, which is preferable for a magneto-optical recording medium comprising a garnet ferrite layer.Type: ApplicationFiled: September 22, 2003Publication date: October 7, 2004Inventors: Akinori Furuya, Hiroshi Yoshikawa, Takaya Tanabe, Manabu Yamamoto, Toshifumi Ohkubo, Laurence Bouet, Philippe Tailhades, Corine Despax-Bonningue, Abel Rousset
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Patent number: 6759137Abstract: This invention relates to magneto-optical recording media such as magneto-optical disks and cards, manufacturing methods of the medium and a magneto-optical recording and playback device to record and play back data using the magneto-optical recording media. The magneto-optical recording medium of the present invention has a recording layer and a reflective layer on a substrate, and the recording layer has a layered structure in which at least one spinel ferrite (or rutile-type oxide or hematite) layer and at least one garnet ferrite layer are piled together. It is preferable that the layered structure is formed on tracks where data are recorded. The manufacturing method of the present invention comprises the steps of heat treatment in the range of 500-700° C., preferably 600-630° C., after the formation of the recording layer.Type: GrantFiled: April 21, 2000Date of Patent: July 6, 2004Assignee: Centre National de la Recherche Scientifique, Inc.Inventors: Akinori Furuya, Hiroshi Yoshikawa, Takaya Tanabe, Manabu Yamamoto, Toshifumi Ohkubo, Laurence Bouet, Philippe Tailhades, Corine Despax, Abel Rousset
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Patent number: 6464750Abstract: The invention relates to a method of preparing metal powder comprising: preparing a simple or mixed oxalate of one or more metals formed of particles with needle-like morphology having a mean acicularity ratio (length/diameter) of from 4 to 20, and a length of from 5 to 10 microns and converting said oxalate to metal or metal alloy powder by reducing treatment with gaseous hydrogen. The conversion of said oxalate can be carried out by decomposing said oxalate, in air, to an oxide and then reducing said oxide to metal or metal alloy. The metal is chosen from among the rare earth metals and the transition metals, preferably from among iron, cobalt, and nickel. The method is particularly suitable for making iron powder metal having a spongy and filament-like microstructure which makes it suitable for use in heating composition for thermo-piles. In addition, the invention relates to metal compacts unstoved or annealed which are obtained by applying compaction pressure to the powders according to the invention.Type: GrantFiled: June 12, 2000Date of Patent: October 15, 2002Assignees: ASB Aerospatiale Batteries, Universite Paul SabatierInventors: Philippe Tailhades, Valérie Carles, Abel Rousset
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Patent number: 6017645Abstract: Composite material for magnetooptic recording, comprising a thin layer deposited on a non-magnetic solid substrate. The said thin layer is a polycrystalline layer consisting of microcrystals having a structure of a vacant-site spinel ferrite, based on iron, cobalt and transition metals. By virtue of a particular process for producing the thin layers, enabling especially the size of the crystallites to be increased, it is possible to optimize the magnetic and magnetooptic properties and to obtain thin layers having, for example, a remanent Faraday rotation and a coercive field which are greater, respectively, than 1 degree per micron for the Faraday rotation and 1000 Oe for the coercive field.Type: GrantFiled: February 25, 1998Date of Patent: January 25, 2000Assignee: ATG-CygnetInventors: Philippe Tailhades, Jean-Pierre Bonino, Isabelle Pasquet, Lionel Presmanes, Laurence Bouet, Abel Rousset, Patrick Langlade
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Patent number: 5731049Abstract: Composite material for magnetooptic recording, comprising a thin layer deposited on a non-magnetic solid substrate. The said thin layer is a polycrystalline layer consisting of microcrystals having a structure of a vacant-site spinel ferrite, based on iron, cobalt and transition metals. By virtue of a particular process for producing the thin layers, enabling especially the size of the crystallites to be increased, it is possible to optimize the magnetic and magnetooptic properties and to obtain thin layers having, for example, a remanent Faraday rotation and a coercive field which are greater, respectively, than 1 degree per micron for the Faraday rotation and 1000 Oe for the coercive field.Type: GrantFiled: December 19, 1994Date of Patent: March 24, 1998Assignee: ATG-CygnetInventors: Philippe Tailhades, Jean-Pierre Bonino, Isabelle Pasquet, Lionel Presmanes, Laurence Bouet, Abel Rousset, Patrick Langlade
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Patent number: 4808327Abstract: Particulate magnetic oxide compositions based on iron oxide (III) and oxide of at least one bivalent metal selected among cobalt, iron, copper, zinc, magnesium, nickel, manganese and cadmium, characterized in that said compositions contain additionally in the form of an oxide from 0.2 to 5% by weight calculated on the total weight at least one additive or substituent selected among alkali metals, alkaline-earth metals, boron, the elements of columns 3, 4 and 5 of the periodical classification of elements having a molecular mass higher than 26, the transition metals 3d and 4d other than those already mentioned, and the rare earths, with the proviso that when an alkali metal or tin is present, at least another additive or substituent is also present, and in that said compositions have a structure of the lanucar spinel type; the preparation and application thereof are also disclosed.Type: GrantFiled: June 1, 1987Date of Patent: February 28, 1989Assignees: Centre National de la Recherche Scientifique (CNRS), Universite Paul Sabatier (Toulouse III)Inventors: Abel Rousset, Christiane B. Salvaing, Paul Mollard, Michel Gougeon, Philippe Tailhades
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Patent number: 4803291Abstract: The disclosed particulate composition of simple or mixed oxalate of ferromagnetic metals is characterized in that it is provided in the form of needle-shaped particles having a length comprised between 0.05 and 0.5 micrometer, with a proportion higher than 60% of particles having a length equal to the average length .+-.0.1 .mu.m. and an acicular ratio higher than 3, said average length being comprised between 0.15 and 0.35 .mu.m; its preparation and its application are also disclosed.Type: GrantFiled: July 2, 1987Date of Patent: February 7, 1989Assignees: Centre National de la Recherche Scientifique, Universite Paul SabatierInventors: Abel Rousset, Christiane B. Salvaing, Paul Mollard, Alain Manoux, Philippe Tailhades