Patents by Inventor Yves Choquette
Yves Choquette 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: 6365068Abstract: The invention relates to ionic compounds in which the anionic load has been displaced, and the uses of these compounds. A compound disclosed by the invention comprises an anionic portion combined with at least one cationic portion M+m in sufficient numbers to ensure overall electronic neutrality. The anionic portion is comprised of one of the groups (A) and (B): wherein Y1, Y2, Y3, Y4 and Y5 represent a carbonyl group, a sulfonyl group, a thiocarbonyl group, a thionyl group, a —C(═NCN)— or a —C(═C(CN)2)— group; Z represents an electroattractive radical; each of the substituents, RA, RB, RC and RD represents independently of one another a monovalent or divalent organic radical or is part of a polymer chain, with at least one of the substituents RC and RD being a perfluorinated radical. The compounds can be used especially for ionic conducting materials, electronic conducting materials, colorants, and the catalysis of various chemical reactions.Type: GrantFiled: June 30, 2000Date of Patent: April 2, 2002Assignees: Hydro-Quebec, Centre National de la Recherche ScientifiqueInventors: Christophe Michot, Michel Armand, Michel Gauthier, Yves Choquette
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Publication number: 20020009650Abstract: The invention concerns ionic compounds in which the anionic load has been delocalized. A compound disclosed by the invention is comprised of an amide or one of its salts, including an anionic portion combined with at least one cationic portion M+m in sufficient numbers to ensure overall electronic neutrality; the compound is further comprised of M as a hydroxonium, a nitrosonium NO+, an ammonium —NH4+, a metallic cation with the valence m, an organic cation with the valence m, or an organometallic cation with the valence m. The anionic portion matches the formula RF—SOx—N−Z, wherein RF is a perfluorinated group, x is 1 or 2, and Z is an electroattractive substituent. The compounds can be used notably for ionic conducting materials, electronic conducting materials, colorants, and the catalysis of various chemical reactions.Type: ApplicationFiled: May 16, 2001Publication date: January 24, 2002Inventors: Christophe Michot, Michel Armand, Michel Gauthier, Yves Choquette
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Publication number: 20020009635Abstract: The invention relates to ionic compositions having a high ionic conductivity comprising a salt with a delocalized anionic charge.Type: ApplicationFiled: May 16, 2001Publication date: January 24, 2002Inventors: Christophe Michot, Michel Armand, Yves Choquette, Michel Gauthier
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Patent number: 6333425Abstract: The invention is related to ionic compounds, derivatives of malononitrile, in which the anionic load has been displaced. An ionic compound disclosed by the invention includes an anionic portion combined with at least one cationic portion M+m in sufficient number to ensure overall electronic neutrality; the compound is further comprised of M as a hydroxonium, a nitrosonium NO+, an ammonium —NH4+, a metallic cation with the valence m, an organic cation with the valence m, or an organometallic cation with the valence m. The anionic portion corresponds to one of the formulas RD—Y—C(C≡N)2− or Z—C(C≡N)2− in which Z is an electroattractive group, RD is an organic radical, and Y is a carbonyl, a thiocarbonyl, a sulfonyl, a sulfinyl, or a phosphonyl. The compounds can be used notably for ionic conducting materials, electronic conducting materials, colorants, and the catalysis of various chemical reactions.Type: GrantFiled: November 19, 1998Date of Patent: December 25, 2001Assignees: Hydro-Quebec, Centre National de la Recherche ScientifiqueInventors: Christophe Michot, Michel Armand, Michel Gauthier, Yves Choquette
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Patent number: 6319428Abstract: The invention concerns ionic compounds in which the anionic load has been delocalized. A compound disclosed by the invention is comprised of an amide or one of its salts, including an anionic portion combined with at least one cationic portion M+m in sufficient numbers to ensure overall electronic neutrality; the compound is further comprised of M as a hydroxonium, a nitrosonium NO+, an ammonium —NH4+, a metallic cation with the valence m, an organic cation with the valence m, or an organometallic cation with the valence m. The anionic portion matches the formula RF—SOx—N−Z, wherein RF is a perfluorinated group, x is 1 or 2, and Z is an electroattractive substituent. The compounds can be used notably for ionic conducting materials, electronic conducting materials, colorants, and the catalysis of various chemical reactions.Type: GrantFiled: December 3, 1998Date of Patent: November 20, 2001Assignees: Hydro-Quebec, Centre National de la Recherche ScientifiqueInventors: Christophe Michot, Michel Armand, Michel Gauthier, Yves Choquette
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Publication number: 20010041295Abstract: The invention concerns an aprotic electrolytic composition located in the separator and in at least one composite electrode containing a powder of an active electrode material, and if necessary an electronic conduction additive of an electrochemical generator. The electrolytic composition comprises a first polymer matrix consisting of a polyether and at least a second polymer matrix, macroscopically separated, and also at least an alkaline salt as well as a polar aprotic solvent: The polymer matrices are capable of being swollen by at least one of the polar aprotic solvents. The solvent or mixture of solvents is unevenly distributed between the polymer matrices. The invention also concerns an electrochemical generator comprising a negative electrode and positive electrode reversible to alkaline ions and a separator with polymer electrolyte, the electrolytic component of which is the composition described above.Type: ApplicationFiled: June 12, 2001Publication date: November 15, 2001Applicant: HYDRO-QUEBECInventors: Alain Vallee, Michel Armand, Yves Choquette, Andre Belanger, Michel Gauthier, Michel Perrier, Karim Zaghib, Estelle Potvin, Simon Besner
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Publication number: 20010025943Abstract: The invention relates to an tonically conductive material, to its preparation and to its uses.Type: ApplicationFiled: April 19, 2001Publication date: October 4, 2001Applicant: CENTRE NATIONAL DE LA RECHERCHE SCIENTIFICInventors: Christophe Michot, Michel Armand, Jean-Yves Sanchez, Yves Choquette, Michel Gauthier
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Publication number: 20010024749Abstract: Grafting a polymer at the surface of a carbonated material containing carboxyl, amine and/or hydroxyl functions at its surface. This material is suspended in a solution comprising the polymer to be grafted, which includes a carboxyl, amine and/or hydroxyl function, the solution also comprising a solvent of the polymer. This is followed by a treatment causing dehydration into a carboxyl function, an amide and/or hydroxyl function and the polymer is thus grafted on the carbonated material by means of ester or amide bonds. Utilization in the cathode or anode of an electrochemical generator, in a polymer material with low polarity, in an ink, and as a conductive deposit on flexible plastic used as electrical contact, electromagnetic protection and antistatic protection.Type: ApplicationFiled: April 6, 2001Publication date: September 27, 2001Applicant: HYDRO-QUEBECInventors: Christophe Michot, Michel Armand, Michel Gauthier, Yves Choquette
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Patent number: 6280882Abstract: The invention concerns an aprotic electrolytic composition located in the separator and in at least one composite electrode containing a powder of an active electrode material, and if necessary an electronic conduction additive of an electrochemical generator The electrolytic composition comprises a first polymer matrix consisting of a polyether and at least a second polymer matrix, macroscopically separated, and also at least an alkaline salt as well as a polar aprotic solvent: The polymer matrices are capable of being swollen by at least one of the polar aprotic solvents. The solvent or mixture of solvents is unevenly distributed between the polymer matrices. The invention also concerns an electrochemical generator comprising a negative electrode and positive electrode reversible to alkaline ions and a separator with polymer electrolyte, the electrolytic component of which is the composition described above.Type: GrantFiled: December 14, 1998Date of Patent: August 28, 2001Assignees: Hydro-Quebec, National de la Recherche ScientifiqueInventors: Alain Vallee, Michel Armand, Yves Choquette, Andre Belanger, Michel Gauthier, Michel Perrier, Karim Zaghib, Estelle Potvin, Simon Besner
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Patent number: 6254797Abstract: The invention relates to an ionically conductive material, to its preparation and to its uses. The material includes at least one ionic compound in solution in an aprotic solvent, chosen from the compounds (1/mM)+[(ZY)2N]−, (1/mM)+[(ZY)3C]− and (1/mM)+[(ZY)2CQ]−, in which Y denotes SO2 or POZ, Q denotes —H, —COZ or Z, each substituent Z independently denotes a fluorine atom or an optionally perfluorinated organic group which optionally contains at least one polymerizable functional group, at least one of the substituents Z denoting a fluorine atom, and M denotes a cation. Application to electrochemical generators, supercapacities, to the doping of polymers and to electrochromic devices.Type: GrantFiled: March 23, 1999Date of Patent: July 3, 2001Assignees: Centre National de la Recherche Scientifique, Hydro-QuebecInventors: Christophe Michot, Michel Armand, Jean-Yves Sanchez, Yves Choquette, Michel Gauthier
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Patent number: 6228942Abstract: Grafting a polymer at the surface of a carbonated material containing carboxyl amine and/or hydroxyl functions at its surface. This material is suspended in a solution comprising the polymer to be grafted, which includes a carboxyl amine and/or hydroxyl function, the solution also comprising a solvent of the polymer. This is followed by a treatment causing dehydration into a carboxyl function, an amide and/or hydroxyl function and the polymer is thus grafted on the carbonated material by means of ester or amide bonds. Utilization in the cathode or anode of an electrochemical generator, in a polymer material with low polarity, in an ink, and as a conductive deposit on flexible plastic used as electrical contact, electromagnetic protection and antistatic protection.Type: GrantFiled: December 2, 1998Date of Patent: May 8, 2001Assignees: Hydro-Quebec, Centre National de la Recherche ScientifiqueInventors: Christophe Michot, Michel Armand, Michel Gauthier, Yves Choquette
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Patent number: 6171522Abstract: The invention relates to ionic compounds in which the anionic load has been displaced, and the uses of these compounds. A compound disclosed by the invention comprises an anionic portion combined with at least one cationic portion M+m in sufficient numbers to ensure overall electronic neutrality. The anionic portion is comprised of one of the groups (A) and (B): wherein Y1, Y2, Y3, Y4 and Y5 represent a carbonyl group, a sulfonyl group, a thiocarbonyl group, a thionyl group, a —C(═NCN)— or a —C(═C(CN)2)— group; Z represents an electroattractive radical; each of the substituents, RA, RB, RC and RD represents independently of one another a monovalent or divalent organic radical or is part of a polymer chain, with at least one of the substituents RC and RD being a perfluorinated radical. The compounds can be used especially for ionic conducting materials, electronic conducting materials, colorants, and the catalysis of various chemical reactions.Type: GrantFiled: November 19, 1998Date of Patent: January 9, 2001Assignees: Hydro-Qu{acute over (e)}bec, Centre National de la Recherche ScientifiqueInventors: Christophe Michot, Michel Armand, Michel Gauthier, Yves Choquette
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Patent number: 6114069Abstract: In a rechargeable lithium battery including inter alia a lithium anode, a lithium ion reducible cathode bonded with a polymer, as well as a polymer electrolyte, potassium ions are introduced either in the cathode or in the electrolyte, or in both of them at the same time, so that potassium is distributed in the cathode and the electrolyte when the generator has reached equilibrium. This has the effect of stabilizing the performances of the battery during cycling in terms of energy and power.Type: GrantFiled: August 7, 1998Date of Patent: September 5, 2000Assignee: Hydro QuebecInventors: Yves Choquette, Michel Armand, Martin Simoneau, Rene Gagnon, Andre Belanger
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Patent number: 5916475Abstract: An ionically conductive material which contains at least one ionic compound in solution in an aprotic solvent, wherein the ionic compound is selected from the group consisting of compounds of the formulae (1/mM).sup.61 ((ZY)2N).sup..crclbar., (1/mM).sup..sym. ((ZY).sub.3 C).sup..crclbar., or (1/mM).sup..sym. ((ZY).sub.2 CQ).sup..crclbar., wherein M, Z, Y and Q are as defined herein.Type: GrantFiled: November 21, 1995Date of Patent: June 29, 1999Assignees: Centre National De La Recherche Scientifique, Hydro-QuebecInventors: Christophe Michot, Michel Armand, Jean-Yves Sanchez, Yves Choquette, Michel Gauthier
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Patent number: 5883220Abstract: The copolymer described is a segmented copolymer consisting essentially of organic segments A which have a number i of reactive ends such that i is from 1 to 6 inclusive, and segments B which have a number j of reactive ends such that j is from 1 to 6 inclusive. The segments B have redox properties and each segment A is connected to at least one segment B by a group Y and vice versa, the group Y being an ether, thioether, secondary amine, tertiary amine, secondary amide, tertiary amide, imide, quarternary ammonium group, or a group having a carbon--carbon bond. The respective weighted molar mean of i and j is 2 or more. Application to electrochemical generators and electrochromic systems.Type: GrantFiled: August 21, 1997Date of Patent: March 16, 1999Assignees: Centre National de la Recherche Scientifique, Hydro-QuebecInventors: Michel Armand, Daniel Baril, Yves Choquette, Christophe Michot, Jean-Yves Sanchez
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Patent number: 5798191Abstract: In a rechargeable lithium battery including inter alia a lithium anode, a lithium ion reducible cathode bonded with a polymer, as well as a polymer electrolyte, potassium ions are introduced either in the cathode or in the electrolyte, or in both of them at the same time, so that potassium is distributed in the cathode and the electrolyte when the generator has reached equilibrium. This has the effect of stabilizing the performances of the battery during cycling in terms of energy and power.Type: GrantFiled: March 12, 1997Date of Patent: August 25, 1998Assignee: Hydro-QuebecInventors: Yves Choquette, Michel Armand, Martin Simoneau, Rene Gagnon, Andre Belanger
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Patent number: 5552510Abstract: The present invention relates to copolymers, to a process for their preparation and to their use for the production of ionically conductive materials. A copolymer according to the invention consists of monomer units corresponding to the formula --CH.sub.2 --O--CHR--CH.sub.2 O (I) and monomer units corresponding to the formula --CH.sub.2 --CHR'--O-- (II), in which: R denotes a hydrogen atom, a linear or branched alkyl radical containing from 1 to 8 carbon atoms or a radical CH.sub.3 (--O--CH.sub.2 --CH.sub.2).sub.n --O--CH.sub.2 --, in which 1.ltoreq.n.ltoreq.10; R' denotes an aliphatic radical containing an unsaturation which can be polymerized by a radical route and inert in the conditions of cationic polymerization. The copolymers can be obtained by cationic polymerization of the appropriate oxirane and dioxolane. Application to the production of ionically conductive materials.Type: GrantFiled: May 27, 1994Date of Patent: September 3, 1996Assignees: Centre National De La Recherche Scientifique, Hydro-QuebecInventors: Jean-Yves Sanchez, Michel Armand, Jean-Pierre Petit, Yves Choquette, Glaura Goulart Silva
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Patent number: 5415948Abstract: Self-protecting current collector, with lateral collection an insulating plastic support film having a thickness between about 1 and 30 microns, and a conductive metallic coating, of a thickness lower than about 10 microns, adhering to at least one face of the insulating support film, compatible with the corresponding material of the electrode of the generator, and wherein its conductive surface is divided into a plurality of adjacent distinct areas, each area being electrically insulated by means of non-conductive borders except for at least one conductive bridge of small cross-section connected to a lateral common conductive margin enabling a lateral collection of the entire distinct areas; the nature and electrical resistance of the conductive bridges enabling on the one hand, passage of currents corresponding to maximum currents provided for each of the individual collection areas of the generator to be produced, and limiting on the other hand, in case of an accidental short-circuit inside an area, the maType: GrantFiled: September 17, 1992Date of Patent: May 16, 1995Assignee: Hydro-QuebecInventors: Michel Gauthier, Guy St-Amant, Yves Choquette, Real Boissonneault
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Patent number: 4916098Abstract: A process and an apparatus for manufacturing electrocatalytic electrodes. The process comprises the steps of immersing a substrate in a plating bath containing metal ions and electrocatalytic material in particles form, such as Ni, NiAl, and CoAl, among others. Electric current is established in the bath inducing a deposition of metal on the substrate by reduction of metal ions and, simultaneously, the cell containing the plating bath is inverted periodically to cause a recurrent migration of the particles of electrocatalytic material, under the effect of gravity, toward the substrate, in order to build-up a layer of electrocatalytic material on the substrate, the particles of the electrocatalytic material being fixed on the substrate by the reduction of metal ions.Type: GrantFiled: November 21, 1988Date of Patent: April 10, 1990Assignee: Sherbrooke UniversityInventors: Hugues Menard, Louis Brossard, Yves Choquette