Patents by Inventor Nicolas Vigier
Nicolas Vigier 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: 11594344Abstract: A method for preparing a powder comprising an intimate mixture of U3O8 particles and PuO2 particles and which may further comprise particles of ThO2 or NpO2. The method comprises: preparing, via oxalic precipitations, an aqueous suspension S1 of particles of uranium(IV) oxalate and an aqueous suspension S2 of particles of plutonium(IV) oxalate; mixing the aqueous suspension S1 with the aqueous suspension S2 to obtain an aqueous suspension S1+2; separating the aqueous suspension S1+2 into an aqueous phase and a solid phase comprising the particles of uranium(IV) oxalate and the particles of plutonium(IV) oxalate; and calcining the solid phase to convert (1) the particles of uranium(IV) oxalate to particles of triuranium octoxide and (2) the particles of plutonium(IV) oxalate to particles of plutonium(IV) dioxide, whereby the powder is obtained.Type: GrantFiled: December 7, 2018Date of Patent: February 28, 2023Assignees: COMMISSARIAT À L'ÉNERGIE ATOMIQUE ET AUX ÉNERGIES ALTERNATIVES, ORANO RECYCLAGEInventors: François Poncelet, Nicolas Vigier, Bénédicte Arab-Chapelet, Aurélie Gauthe, Eléonore Welcomme, Marie Hélène Noire
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Publication number: 20210166826Abstract: A method for preparing a powder comprising an intimate mixture of U3O8 particles and PuO2 particles and which may further comprise particles of ThO2 or NpO2. The method comprises: preparing, via oxalic precipitations, an aqueous suspension S1 of particles of uranium(IV) oxalate and an aqueous suspension S2 of particles of plutonium(IV) oxalate; mixing the aqueous suspension S1 with the aqueous suspension S2 to obtain an aqueous suspension S1+2, separating the aqueous suspension S1+2 into an aqueous phase and a solid phase comprising the particles of uranium(IV) oxalate and the particles of plutonium(IV) oxalate; and calcining the solid phase to convert (1) the particles of uranium(IV) oxalate to particles of triuranium octoxide and (2) the particles of plutonium(IV) oxalate to particles of plutonium(IV) dioxide, whereby the powder is obtained.Type: ApplicationFiled: December 7, 2018Publication date: June 3, 2021Inventors: François Poncelet, Nicolas Vigier, Bénédicte Arab-Chapelet, Aurélie Gauthe, Eléonore Welcomme, Marie Hélène Noire
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Patent number: 10026510Abstract: A process is described for synthesizing a mixed peroxide or hydroxo-peroxide of an actinyl and at least one cation X1, wherein the actinyl is a uranyl or neptunyl and the at least one cation X1 is a di-, tri- or tetra-charged metal cation. This process includes the reaction in a solvent of a salt of the at least one cation X1 with a compound C2 selected from mixed peroxides and hydroxo-peroxides of the actinyl and of at least one singly charged cation X2, whereby compound C2 is converted to the peroxide or hydroxo-peroxide by replacement of the at least one cation X2 by said at least one cation X1. Also disclosed is a process for synthesizing a mixed oxide of an actinide selected from uranium and neptunium, and of at least one metal able to form a di-, tri- or tetra-charged cation, which implements the preceding synthesis process.Type: GrantFiled: December 18, 2014Date of Patent: July 17, 2018Assignee: Orano CycleInventors: Florent Blanchard, Francis Abraham, Stéphane Grandjean, Nicolas Vigier, Isabelle Hablot, Murielle Rivenet
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Publication number: 20160314858Abstract: A process is described for synthesizing a mixed peroxide or hydroxo-peroxide of an actinyl and at least one cation X1, wherein the actinyl is a uranyl or neptunyl and the at least one cation X1 is a di-, tri- or tetra-charged metal cation. This process includes the reaction in a solvent of a salt of the at least one cation X1 with a compound C2 selected from mixed peroxides and hydroxo-peroxides of the actinyl and of at least one singly charged cation X2, whereby compound C2 is converted to the peroxide or hydroxo-peroxide by replacement of the at least one cation X2 by said at least one cation X1. Also disclosed is a process for synthesizing a mixed oxide of an actinide selected from uranium and neptunium, and of at least one metal able to form a di-, tri- or tetra-charged cation, which implements the preceding synthesis process.Type: ApplicationFiled: December 18, 2014Publication date: October 27, 2016Applicant: AREVA NCInventors: Florent Blanchard, Francis Abraham, Stéphane Grandjean, Nicolas Vigier, Isabelle Hablot, Murielle Rivenet
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Patent number: 9325039Abstract: In a system and method for detecting venting of a sealed storage cell, the sealed storage cell comprises a container with a sealing cap adapted to be detached from the container and move in the presence of gas overpressure inside the container to allow venting of the storage cell. The detection system comprises a printed circuit board with a central portion designed to be situated opposite the sealing cap, a peripheral portion surrounding the central portion and connected to the central portion by a hinge adapted to flex during movement of the sealing cap, and at least one frangible portion adapted to break upon movement of the sealing cap. An electrical printed track connects the peripheral portion to the central portion through the hinge and frangible portion(s), and is designed to be broken upon breaking of the frangible portion(s) following movement of the sealing cap.Type: GrantFiled: April 17, 2013Date of Patent: April 26, 2016Assignee: SAFTInventors: Laurent Guidal, Pascal Susset, Nicolas Vigier
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Publication number: 20130280559Abstract: In a system and method for detecting venting of a sealed storage cell, the sealed storage cell comprises a container with a sealing cap adapted to be detached from the container and move in the presence of gas overpressure inside the container to allow venting of the storage cell. The detection system comprises a printed circuit board with a central portion designed to be situated opposite the sealing cap, a peripheral portion surrounding the central portion and connected to the central portion by a hinge adapted to flex during movement of the sealing cap, and at least one frangible portion adapted to break upon movement of the sealing cap. An electrical printed track connects the peripheral portion to the central portion through the hinge and frangible portion(s), and is designed to be broken upon breaking of the frangible portion(s) following movement of the sealing cap.Type: ApplicationFiled: April 17, 2013Publication date: October 24, 2013Applicant: SAFTInventors: Laurent GUIDAL, Pascal SUSSET, Nicolas VIGIER
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Patent number: 7745024Abstract: A sealed accumulator (1) having an electrochemical bundle (9) including at least one positive electrode and one negative electrode arranged in a container (2); positive (6) and negative (7) current output terminals arranged on a cover (5) of the container and respectively connected to the positive and negative electrodes; a circuit-breaker including a connecting piece (10) and a membrane (20), electrically insulated from the connecting piece and suitable for deforming under the effect of an overpressure in the container, to break the connecting piece. The connecting piece extends over the top of the cover of the container and conducts an electric current between an electrode of one polarity and its current output terminal. The connecting piece is dimensioned to allow the passage of a current greater than 50 A.Type: GrantFiled: January 30, 2006Date of Patent: June 29, 2010Assignee: SAFTInventors: Frederic Dewulf, Nicolas Vigier
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Patent number: 7568958Abstract: A terminal for a sealed accumulator includes a single-piece body made of aluminium with at least one tinned zone for soldering to an electronic card and at least one non-tinned zone for connection to a current output terminal of the accumulator. The electrical terminal has a limited space requirement; welds well onto an accumulator container made of aluminium and allows easy assembly with an electronic card by soldering without risk of migration of tin which could cause a short circuit.Type: GrantFiled: March 4, 2008Date of Patent: August 4, 2009Assignee: Saft Groupe SAInventor: Nicolas Vigier
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Publication number: 20080220667Abstract: A terminal for a sealed accumulator comprises a single-piece body made of aluminium with at least one tinned zone for soldering to an electronic card and at least one non-tinned zone for connection to a current output terminal of the accumulator. The electrical terminal has a limited space requirement; welds well onto an accumulator container made of aluminium and allows easy assembly with an electronic card by soldering without risk of migration of tin which could cause a short circuit.Type: ApplicationFiled: March 4, 2008Publication date: September 11, 2008Applicant: SAFT GROUPE SAInventor: Nicolas VIGIER
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Publication number: 20060199046Abstract: A sealed accumulator (1) comprises an electrochemical bundle (9) comprising at least one positive electrode and one negative electrode arranged in a container (2); positive (6) and negative (7) current output terminals arranged on a cover (5) of the container and respectively connected to the positive and negative electrodes; a circuit-breaker comprising a connecting piece (10) and a membrane (20), electrically insulated from the connecting piece and suitable for deforming under the effect of an overpressure in the container, to break the connecting piece. The connecting piece extends over the top of the cover of the container and conducts an electric current between an electrode of one polarity and its current output terminal. The connecting piece is dimensioned to allow the passage of a current greater than 50 A.Type: ApplicationFiled: January 30, 2006Publication date: September 7, 2006Applicant: SAFTInventors: Frederic Dewulf, Nicolas Vigier
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Patent number: 7074518Abstract: An electrochemical battery comprises a casing (1) presenting a surface of revolution about an axis, having at least one air inlet opening (4) and at least one air outlet opening (5), and housing firstly in a central portion (6), fan means (7), and secondly around the periphery of the central portion, secondary electrochemical cells (8) arranged in such a manner as to deliver selected electrical characteristics. The air flow generated by the axial fan means (7) between the air inlet opening (4) and the air outlet opening (5) sweep over the cells (8), thereby regulating their temperature.Type: GrantFiled: April 22, 2003Date of Patent: July 11, 2006Assignee: Saft Finance S.AR.L.Inventors: Nicolas Vigier, Stéphane Besse
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Publication number: 20030198864Abstract: An electrochemical battery comprises a casing (1) presenting a surface of revolution about an axis, having at least one air inlet opening (4) and at least one air outlet opening (5), and housing firstly in a central portion (6), fan means (7), and secondly around the periphery of the central portion, secondary electrochemical cells (8) arranged in such a manner as to deliver selected electrical characteristics. The air flow generated by the axial fan means (7) between the air inlet opening (4) and the air outlet opening (5) sweep over the cells (8), thereby regulating their temperature.Type: ApplicationFiled: April 22, 2003Publication date: October 23, 2003Applicant: ALCATELInventors: Nicolas Vigier, Stephane Besse