Patents by Inventor Brigitte Martin
Brigitte 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: 9954141Abstract: A process for fabricating an electronic device including a substrate and microwires or nanowires resting on the substrate, the process including successive steps of covering the wires with an insulating layer, covering the insulating layer with an opaque layer, depositing a first photoresist layer over the substrate between the wires, etching the first photoresist layer over a first thickness by photolithography, etching the first photoresist layer remaining after the preceding step over a second thickness by plasma etching, etching the portion of the opaque layer not covered by the first photoresist layer remaining after the preceding step, etching the portion of the insulating layer not covered by the opaque layer, removing the first photoresist layer remaining after the preceding step, and removing the opaque layer.Type: GrantFiled: December 24, 2015Date of Patent: April 24, 2018Assignees: Aledia, Commissariat à l'Énergie Atomique et aux Énergies AlternativesInventors: Eric Pourquier, Philippe Gibert, Brigitte Martin
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Publication number: 20180019376Abstract: A process for fabricating an electronic device including a substrate and microwires or nanowires resting on the substrate, the process including successive steps of covering the wires with an insulating layer, covering the insulating layer with an opaque layer, depositing a first photoresist layer over the substrate between the wires, etching the first photoresist layer over a first thickness by photolithography, etching the first photoresist layer remaining after the preceding step over a second thickness by plasma etching, etching the portion of the opaque layer not covered by the first photoresist layer remaining after the preceding step, etching the portion of the insulating layer not covered by the opaque layer, removing the first photoresist layer remaining after the preceding step, and removing the opaque layer.Type: ApplicationFiled: December 24, 2015Publication date: January 18, 2018Applicants: Aledia, Commissariat à I'Énergie Atomique et aux Énergies AlternativesInventors: Eric Pourquier, Philippe Gibert, Brigitte Martin
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Patent number: 8418443Abstract: The present invention relates to a method of treating exhaust gas pollutants, notably of an internal-combustion engine, with a system comprising an exhaust line (L) with selective catalytic reduction catalysis means (62) and injection means (82) for injecting a reducing agent into the line so as to treat the pollutants, characterized in that it consists in: heating an organonitrogen compound so as to decompose it into a mixture of at least an ammonia-containing reducing agent in the gas phase, another reducing agent in the gas phase and steam, compressing, then cooling this mixture so as to condense the steam to a liquid water phase and to obtain a gas phase of one of the two reducing agents and a liquid phase of the other reducing agent, injecting one of the reducing agents into the exhaust line in combination with said catalysis means (62) in order to treat the pollutants of these gases.Type: GrantFiled: December 10, 2010Date of Patent: April 16, 2013Assignee: IFP Energies NouvellesInventors: Claire-Noëlle Millet, Thierry Colliou, Brigitte Martin
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Patent number: 8263317Abstract: At least one hollow zone is formed in a stack of at least one upper layer and one lower layer. The upper layer is patterned to form at least a first hollow region passing through said upper layer. The first hollow region is extended by a second hollow region formed in the lower layer by etching through an etching mask formed on the patterned upper layer. The etching mask is formed by a resin layer, positively photosensitive to an optic radiation of a predetermined wavelength, exposed to the said optic radiation through the stack and developed. The lower and upper layers of the stack are respectively transparent and opaque to said predetermined wavelength so that the patterned upper layer acts as exposure mask for the resin layer.Type: GrantFiled: December 4, 2007Date of Patent: September 11, 2012Assignee: Commissariat a l'Energie AtomiqueInventors: Alain Fargeix, Brigitte Martin
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Publication number: 20110138780Abstract: The present invention relates to a method of treating exhaust gas pollutants, notably of an internal-combustion engine, with a system comprising an exhaust line (L) with selective catalytic reduction catalysis means (62) and injection means (82) for injecting a reducing agent into the line so as to treat the pollutants, characterized in that it consists in: heating an organonitrogen compound so as to decompose it into a mixture of at least an ammonia-containing reducing agent in the gas phase, another reducing agent in the gas phase and steam, compressing, then cooling this mixture so as to condense the steam to a liquid water phase and to obtain a gas phase of one of the two reducing agents and a liquid phase of the other reducing agent, injecting one of the reducing agents into the exhaust line in combination with said catalysis means (62) in order to treat the pollutants of these gases.Type: ApplicationFiled: December 10, 2010Publication date: June 16, 2011Inventors: Claire-Noëlle MILLET, Thierry Colliou, Brigitte Martin
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Publication number: 20100059477Abstract: At least one hollow zone is formed in a stack of at least one upper layer and one lower layer. The upper layer is patterned to form at least a first hollow region passing through said upper layer. The first hollow region is extended by a second hollow region formed in the lower layer by etching through an etching mask formed on the patterned upper layer. The etching mask is formed by a resin layer, positively photosensitive to an optic radiation of a predetermined wavelength, exposed to the said optic radiation through the stack and developed. The lower and upper layers of the stack are respectively transparent and opaque to said predetermined wavelength so that the patterned upper layer acts as exposure mask for the resin layer.Type: ApplicationFiled: December 4, 2007Publication date: March 11, 2010Applicant: COMMISSARIAT A L'ENERGIE ATOMIQUEInventors: Alain Fargeix, Brigitte Martin
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Patent number: 6674042Abstract: A process for forming metal components of controlled porosity by welding, in which a predetermined amount of metal elements (50) of oblong shape is introduced into a mold (10) in which it is distributed isotropically. The metal elements are then subjected to increasing pressure (P) until the component has its final shape. The walls of the mold are then held in position and an electric current (I) flows through the metal elements and welds them together by local melting at the points of contact due to the Joule effect.Type: GrantFiled: March 1, 2002Date of Patent: January 6, 2004Assignees: Renault SAS, ONERA (Office Nationale d'Etudes et de Recherches aerospatiales), Arvin Exhaust SA, Gervois SAInventors: Andre Walder, Brigitte Martin
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Patent number: 6508057Abstract: A device for eliminating nitrogen oxides in an exhaust line of a lean-burn internal-combustion engine (1) a NOx trap (3) for trapping the nitrogen oxides, a system for regenerating the nitrogen oxides when the NOx trap is saturated, a hydrocarbon treating catalyst (2) placed upstream from the NOx trap (3), a hydrocarbon injector (4) placed upstream from hydrocarbon treating catalyst (2), a probe (7) for measuring the gas mixture strength. The hydrocarbon treating catalyst (2) is a partial (or controlled) hydrocarbon oxidation catalyst that cooperates with the NOx trap (3) for trapping the nitrogen oxides and that allows to obtain, at the outlet thereof, gases with a low oxygen (O2) concentration and with high carbon monoxide (CO) and hydrogen (H2) concentrations. A control unit is furthermore provided for recording and processing data coming from various detectors and/or stored in order to carry out effective regeneration of the NOx trap (3) without disrupting the smooth running of the engine.Type: GrantFiled: December 9, 1999Date of Patent: January 21, 2003Assignee: Institut Francais du PetroleInventors: Mathias Bouchez, Gil Mabilon, Brigitte Martin, Patrick Bourges
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Patent number: 6327851Abstract: The present invention relates to a process for controlled injection of hydrocarbons into an exhaust line of a lean-burn internal-combustion engine, comprising catalytic elimination of the nitrogen oxides. The process according to the invention consists in injecting a certain amount of hydrocarbons upstream from the catalytic elimination, periodically and for a short time interval, by means of pulsed hydrocarbon injections. The frequency and the amplitude of the hydrocarbon pulses are preferably controlled according to the running conditions of the engine.Type: GrantFiled: April 29, 1999Date of Patent: December 11, 2001Assignee: Institut Francais du PetroleInventors: Mathias Bouchez, Brigitte Martin, Patrick Bourges
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Patent number: 6217838Abstract: The invention concerns a process for reducing emissions of oxides of nitrogen in a medium which is super-stoichiomeitric in oxidising agents, comprising: a) a step for oxidising at least a portion of the oxides of nitrogen in the presence of an oxidation material; b) a step for injecting organic compounds which comprise at least one atom selected from carbon, hydrogen, oxygen and nitrogen; c) a step for adsorbing at least a portion of the organic compounds onto an adsorption material in the form of molecular species and/or carbonaceous residues; d) a step for selective reduction of at least a portion of the oxides of nitrogen to molecular nitrogen by at least a portion of the molecular species and/or carbonaceous residues formed on the adsorption material.Type: GrantFiled: October 12, 1999Date of Patent: April 17, 2001Assignee: Institut Francais du PetroleInventors: Patrick Bourges, Mathias Bouchez, Gil Mabilon, Brigitte Martin
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Patent number: 6176896Abstract: A process and device for local permeability evaluation and local regeneration of a particle filter consisting of several juxtaposed zones through which a flow of gas to be scrubbed is passed include the steps of and apparatus for measuring the temperature of the flow upstream from the filter, measuring the temperature in at least one of the zones forming the filter, evaluating the thermal inertia of at least one of the zones by relative measurement of the temperature or of the local resistance to the temperature upstream from the filter, deducing from this the local permeability of the filter and locally regenerating the filter.Type: GrantFiled: April 29, 1999Date of Patent: January 23, 2001Assignee: Institut Francais du PetroleInventors: Jean-Baptiste Dementhon, Brigitte Martin, Bruno Bourry
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Patent number: 6107603Abstract: A device intended to measure fouling and to locally heat an electrical insulating medium. At least one electrically resistive heating element (6, 8) is associated with a fouling detection unit. The fouling detection unit includes metallic elements (6, 10) in contact, at at least two points, with the insulating medium. The resistance variation between the two points is measured and is directly linked with the fouling of the medium.Type: GrantFiled: March 6, 1998Date of Patent: August 22, 2000Assignee: Institut Francais du PetroleInventors: Jean-Baptiste Dementhon, Brigitte Martin
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Patent number: 6090172Abstract: The present invention is a filtering unit providing after-treatment of the gases emited in the exhaust of Diesel engines, comprising a filtering set which includes at least one filtering element (11, 12, 13); at least one resistive element (3) which heats a zone (121, 122, 123) of one of the at least one filtering element; at least one detection device which determines fouling of the filtering set (1); a control (5), responsive to the at least one detection device, which controls independently each of the resistive elements, according to the fouling of the filtering set and electrical power available to the at least one resistive element. The resistive elements (3) can be each wound around a zone of a filtering element. The invention further relates to the associated process.Type: GrantFiled: November 12, 1997Date of Patent: July 18, 2000Assignee: Institut Francias du PetroleInventors: Jean-Baptiste Dementhon, Brigitte Martin, Olivier Pajot
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Patent number: 6018943Abstract: A process and an assembly for eliminating nitrogen oxides (NO.sub.x) present in the exhaust gas of a lean-burn diesel or spark-ignition engine, is part of the exhaust line coming from the engine. At least one nitrogen oxides conversion catalyst is placed in the main exhaust line the catalysts having non-coinciding temperature ranges for which the NO.sub.x conversion is below a certain conversion coefficient (C.sub.min). At least one NO.sub.x trap placed upstream is the conversion catalyst(s) and intended to trap, then to release the nitrogen oxides. At least one line bypassing the main exhaust line contains at least one of the NO.sub.x trap(s); and at least one valve intended to modulate the flow of gas between the bypass line and the main exhaust line is provided so that the NO.sub.x trap(s) can trap the nitrogen oxides, notably when conversion catalyst(s) have a conversion coefficient below a predetermined value (C.sub.min) and so that said the NO.sub.Type: GrantFiled: June 16, 1998Date of Patent: February 1, 2000Assignee: Institut Francais Du PetroleInventors: Brigitte Martin, Matthias Bouchez
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Patent number: 6009703Abstract: The present invention relates to a process and to an assembly for eliminating nitrogen oxides present in the exhaust gas of an internal-combustion engine (1), said assembly being part of the exhaust line (2) coming from the engine and comprising:a nitrogen oxides conversion means,a heat exchanger (4) placed in a bypass line (5) situated upstream from conversion means (3), intended to cool said exhaust gas.According to the invention, the conversion means comprises several catalysts (3) placed in main exhaust line (2), said catalyst(s) having non-coinciding temperature ranges for which conversion of the nitrogen oxides is below a certain threshold (C.sub.min). Furthermore, at least one valve (6) is placed at the inlet of bypass line (5) and intended to modulate the flow of gas between said bypass line (5) and main line (2) so that said exhaust gas reaches catalysts (3) at a temperature where at least one of said catalysts is active.Type: GrantFiled: June 15, 1998Date of Patent: January 4, 2000Assignee: Institut Francais du PetroleInventors: Matthias Bouchez, Brigitte Martin
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Patent number: 5956944Abstract: The invention relates to a process for controlling a particulate filter in the exhaust of a Diesel engine using an after-treatment of the particulates while requiring a minimum amount of energy. The process according to the invention adapts the geometry of a filter placed in the exhaust gas flow according to predetermined strategies linked with the running of the engine, the process being such that it limits a mean back pressure of the engine which degrades engine efficiency.Type: GrantFiled: September 12, 1997Date of Patent: September 28, 1999Assignee: Institut Francais du PetroleInventors: Jean-Baptiste Dementhon, Brigitte Martin, Olivier Pajot