Patents by Inventor Georges Hadziioannou
Georges Hadziioannou 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: 11871650Abstract: The invention relates to a composition comprising a blend of fluorinated electroactive polymers and having a dielectric permittivity that exhibits greater stability over the operating temperature range with respect to each polymer employed on its own. The invention also relates to formulations and films produced on the basis of said composition. The invention also relates to a field-effect transistor, at least part of the dielectric layer of which is composed of a blend of fluorinated electroactive polymers.Type: GrantFiled: August 7, 2018Date of Patent: January 9, 2024Assignees: ARKEMA FRANCE, UNIVERSITE DE BORDEAUX, INSTITUT POLYTECHNIQUE DE BORDEAUX, CENTRE NATIONAL DE LA RECHERCHE SCIENTIFIQUEInventors: Fabrice Domingues Dos Santos, Thibaut Soulestin, Damien Thuau, Georges Hadziioannou
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Publication number: 20230364643Abstract: There is disclosed a transducer and a method for generating the transducer. The transducer is formed on a substrate layer. The transducer includes a first electrode layer, a first piezoelectric layer on the first electrode layer, and a second electrode layer on the first piezoelectric layer. The first electrode layer is connected to a first electrical connector and the second electrode layer is connected to a second electrical connector. The transducer can be configured to act as an acoustic sensor or an electric potential sensor.Type: ApplicationFiled: May 12, 2023Publication date: November 16, 2023Inventors: Nelson L. JUMBE, Andreas SCHUH, Peter REXELIUS, Michael MORIMOTO, Wiljan SMAAL, Georges HADZIIOANNOU, Guillaume PAYROT
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Publication number: 20230022870Abstract: A polymer including VDF-based units having an electrocaloric effect under the effect of a variable electric field. The polymer includes 0.1 to 10.0 mol % double bonds, which are substantially non-conjugated. Also, a corresponding composition including the polymer, a corresponding film including the polymer, and to various uses of the polymer.Type: ApplicationFiled: December 11, 2020Publication date: January 26, 2023Applicants: Arkema France, UNIVERSITE DE BORDEAUX, INSTITUT POLYTECHNIQUE DE BORDEAUX, CENTRE NATIONAL DE LA RECHERCHE SCIENTIFIQUEInventors: Fabrice DOMINGUES DOS SANTOS, Thibaut SOULESTIN, Florian LE GOUPIL, Konstantinos KALLITSIS, Georges HADZIIOANNOU
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Publication number: 20220411550Abstract: A copolymer including fluorinated units of formula (I): —CX1X2—CX3X4—??(I) in which each of the X1, X2, X3 and X4 is independently chosen from H, F and alkyl groups including from 1 to 3 carbon atoms which are optionally partially or totally fluorinated; and fluorinated units of formula (II): —CX5X6—CX7Z—??(II) in which each of the X5, X6 and X7 is independently chosen from H, F and alkyl groups including from 1 to 3 carbon atoms which are optionally partially or totally fluorinated, and in which Z is a photoactive group of formula —Y—Ar—R, Y representing an oxygen atom or an NH group or a sulfur atom, Ar representing an aryl group, and R being a monodentate or bidentate group including from 1 to 30 carbon atoms. Also, a process for preparing this copolymer, a composition including this copolymer, and a film obtained from this copolymer.Type: ApplicationFiled: December 16, 2019Publication date: December 29, 2022Applicants: ARKEMA FRANCE, UNIVERSITE DE BORDEAUX, INSTITUT POLYTECHNIQUE DE BORDEAUX, CENTRE NATIONAL DE LA RECHERCHE SCIENTIFIQUEInventors: Fabrice DOMINGUES DOS SANTOS, Thibaut SOULESTIN, Georges HADZIIOANNOU, Eric CLOUTET, Cyril BROCHON, Konstantinos KALLITSIS
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Publication number: 20220098343Abstract: A copolymer including units derived from fluoro monomers of formula (I): CX1X2?CX3X4??(I) in which each of the X1, X2, X3 and X4 is independently chosen from H, F and alkyl groups including from 1 to 3 carbon atoms which are optionally partially or totally fluorinated, the H and/or F atoms of the fluoro monomers being partially replaced with photoactive groups of formula —Y—Ar—R in the copolymer; Y representing an oxygen atom or an NH group or a sulfur atom, Ar representing an aryl group, preferably a phenyl group, and R being a monodentate or bidentate group including from 1 to 30 carbon atoms. The fluoro monomers of formula (I) of the copolymer include vinylidene fluoride and trifluoroethylene. Also, a process for preparing this copolymer, a composition including this copolymer, and a film obtained from the copolymer.Type: ApplicationFiled: December 16, 2019Publication date: March 31, 2022Applicants: Arkema France, UNIVERSITE DE BORDEAUX, INSTITUT POLYTECHNIQUE DE BORDEAUX, CENTRE NATIONAL DE LA RECHERCHE SCIENTIFIQUEInventors: Georges HADZIIOANNOU, Eric CLOUTET, Cyril BROCHON, Konstantinos KALLITSIS, Fabrice DOMINGUES DOS SANTOS, Thibaut SOULESTIN
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Publication number: 20220073663Abstract: A copolymer including fluorinated units of formula (I): —CX1X2—CX3X4—??(I) in which each of the X1, X2, X3 and X4 is independently chosen from H, F and alkyl groups including from 1 to 3 carbon atoms which are optionally partially or totally fluorinated; and units of formula (III): —CXAXB—CXCZ—??(III) in which each of the XA, XB and XC is independently chosen from H, F and alkyl groups including from 1 to 3 carbon atoms which are optionally partially or totally fluorinated, and Z being a polarizable group of formula —Y—Ar—R; Y representing an O atom or an S atom or an NH group, Ar representing an aryl group, and R being a monodentate or bidentate group including from 1 to 30 carbon atoms; and the copolymer having a heat of fusion of greater than or equal to 5 J/g. Also a process, a composition, an ink and a film.Type: ApplicationFiled: December 16, 2019Publication date: March 10, 2022Applicants: ARKEMA FRANCE, UNIVERSITE DE BORDEAUX, INSTITUT POLYTECHNIQUE DE BORDEAUX, CENTRE NATIONAL DE LA RECHERCHE SCIENTIFIQUEInventors: Fabrice DOMINGUES DOS SANTOS, Thibaut SOULESTIN, Georges HADZIIOANNOU, Eric CLOUTET, Cyril BROCHON, Konstantinos KALLITSIS
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Publication number: 20220056189Abstract: Disclosed are ion-sensitive polymers and methods for their use for monitoring biological phenomena associated with ion fluxes, as well as organic electrochemical transistors including such polymers.Type: ApplicationFiled: December 17, 2019Publication date: February 24, 2022Inventors: Eric CLOUTET, Jochen LANG, Alexander KUHN, Georges HADZIIOANNOU, Matthieu RAOUX, Ariana VILLARROEL, Myriam ABARKAN
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Publication number: 20210376239Abstract: The invention relates to a composition comprising a blend of fluorinated electroactive polymers and having a dielectric permittivity that exhibits greater stability over the operating temperature range with respect to each polymer employed on its own. The invention also relates to formulations and films produced on the basis of said composition. The invention also relates to a field-effect transistor, at least part of the dielectric layer of which is composed of a blend of fluorinated electroactive polymers.Type: ApplicationFiled: August 7, 2018Publication date: December 2, 2021Applicants: ARKEMA FRANCE, UNIVERSITE DE BORDEAUX, INSTITUT POLYTECHNIQUE DE BORDEAUX, CENTRE NATIONAL DE LA RECHERCHE SCIENTIFIQUEInventors: Fabrice DOMINGUES DOS SANTOS, Thibaut SOULESTIN, Damien THUAU, Georges HADZIIOANNOU
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Publication number: 20200301304Abstract: Some embodiments relate to an electrophoretic ink including particles that may have a negative charge, dispersed in a non-polar organic solvent. The ink includes a trialkylamine charge-control agent, selected from the following charge-control agents: tributylamine, triisobutylamine, tripentylamine, trihexylamine, tri(2-ethylhexyl)amine, trioctylamine, triisooctylamine, tridodecylamine, triisododecylamine. The particles have a hydrophobic surface and an isoelectric point (IEP) or a point of zero charge (PZC) that is lower than the pKa of the charge-control agent.Type: ApplicationFiled: March 3, 2017Publication date: September 24, 2020Inventors: Deborah MIRBEL, Christophe NAVARRO, Cyril BROCHON, Éric CLOUTET, Georges HADZIIOANNOU
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Publication number: 20200231731Abstract: A process for preparing a nanostructured assembly by annealing a composition comprising a block copolymer on a surface. The block copolymer includes a first block resulting from the polymerization of at least one cyclic monomer having a structure as described herein. The block copolymer also includes a second block that includes a vinyl aromatic monomer.Type: ApplicationFiled: October 7, 2016Publication date: July 23, 2020Applicant: Arkema FranceInventors: Christophe NAVARRO, Celia Nicolet, Karim Aissou, Muhammad Mumtaz, Eric Cloutet, Cyril Brochon, Guillaume Fleury, Georges Hadziioannou
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Publication number: 20200157334Abstract: The invention relates to a copolymer comprising units derived from monomers of vinylidene fluoride and/or trifluoroethylene, as well as fluorinated monomers X comprising a double bond and a leaving group selected from among chlorine, bromine and iodine atoms, the leaving groups being partially replaced by azide groups in the copolymer.Type: ApplicationFiled: July 16, 2018Publication date: May 21, 2020Applicants: Arkema France, UNIVERSITE DE BORDEAUX, INSTITUT POLYTECHNIQUE DE BORDEAUX, CENTRE NATIONAL DE LA RECHERCHE SCIENTIFIQUEInventors: Georges HADZIIOANNOU, Eric CLOUTET, Cyril BROCHON, Damien THUAU, Konstantinos KALLITSIS, Fabrice DOMINGUES DOS SANTOS, Thibaut SOULESTIN
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Patent number: 10199135Abstract: The invention relates to stable compositions of carbon nanotubes and of electrolytic polymers, these electrolytic polymers being characterized by the presence of phosphonyl imide or sulfonyl imide functions or alternatively phosphoric acid functions. The invention also relates to the manufacture of transparent electrodes comprising these compositions of carbon nanotubes and of electrolytic polymers.Type: GrantFiled: October 29, 2014Date of Patent: February 5, 2019Assignees: ARKEMA FRANCE, CENTRE NATIONAL DE LA RECHERCHE SCIENTIFIQUE, UNIVERSITE DE BORDEAUX, INSTITUT POLYTECHNIQUE DE BORDEAUXInventors: Christophe Navarro, Wiljan Smaal, Muhammad Mumtaz, Eric Cloutet, Cyril Brochon, Georges Hadziioannou
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Publication number: 20180173094Abstract: The invention relates to a process for controlling the surface energy at the upper interface of a block copolymer (BCP1), the lower interface of which is in contact with a preneutralized surface of a substrate, in order to make it possible to obtain an orientation of the nanodomains of the block copolymer (BCP1) perpendicularly to the two lower and upper interfaces, the said process consisting in covering the upper surface of the block copolymer (BCP1) with an upper surface neutralization layer (TC) and being characterized in that the said upper surface neutralization layer (TC) comprises a second block copolymer (BCP2).Type: ApplicationFiled: May 26, 2016Publication date: June 21, 2018Applicants: ARKEMA FRANCE, CENTER NATIONAL DE LA RECHERCHE SCIENTIFIQUE (CNRS), INSTITUT POLYTECHNIQUE DE BORDEAUX, UNIVERSITE DE BORDEAUXInventors: Xavier CHEVALIER, Celia NICOLET, Christophe NAVARRO, Georges HADZIIOANNOU
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Publication number: 20180171134Abstract: The invention relates to a process for reducing the defectivity of a block copolymer (BCP1) film, the lower surface of which is in contact with a preneutralized surface (N) of a substrate (S) and the upper surface of which is covered by an upper surface neutralization layer (TC) in order to make it possible to obtain an orientation of the nanodomains of the block copolymer (BCP1) perpendicularly to the two lower and upper interfaces, where the upper surface neutralization layer (TC) employed to cover the upper surface of the block copolymer (BCP1) film comprises a second block copolymer (BCP2).Type: ApplicationFiled: May 26, 2016Publication date: June 21, 2018Applicants: ARKEMA FRANCE, INSTITUT POLYTECHNIQUE DE BORDEAUX, UNIVERSITE DE BORDEAUX, CENTRE NATIONAL DE LA RECHERCHE SCIENTIFIQUE (CNRS)Inventors: Xavier Chevalier, Celia NICOLET, Christophe NAVARRO, Georges HADZIIOANNOU
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Patent number: 9890241Abstract: The invention relates to a process for synthesizing poly(3,4-ethylenedioxythiophene)-electrolytic (co)polymer composite in a single step.Type: GrantFiled: October 29, 2014Date of Patent: February 13, 2018Assignees: Arkema France, Centre National De La Recherche Scientifique, Universite De Bordeaux, Institut Polytechnique De BordeauxInventors: Christophe Navarro, Usein Ismailov, Muhammad Mumtaz, Eric Cloutet, Cyril Brochon, Georges Hadziioannou
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Patent number: 9558861Abstract: The invention relates to novel block copolymers that enable a good dispersion of nanofillers in water and also to a dispersion of nanofillers obtained owing to these block copolymers. This dispersion may be used as a transparent electrode in organic solar cells or other photoemitter or photoreceptor devices.Type: GrantFiled: April 3, 2013Date of Patent: January 31, 2017Assignees: ARKEMA FRANCE, CENTRE NATIONAL DE LA RECHERCHE SCIENTIFIQUE, UNIVERSITE DE BORDEAUX, INSTITUT POLYTECHNIQUE DE BORDEAUXInventors: Christophe Navarro, Katerina Bethani, Cyril Brochon, Henri Cramail, Guillaume Fleury, Georges Hadziioannou, Eric Cloutet
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Publication number: 20160333216Abstract: The invention relates to a process that enables the creation of nanometric structures by self-assembly of block copolymers, at least one of the blocks of which results from the polymerization of monomers comprising at least one cyclic entity corresponding to the formula I. where X?Si(R1,R2); Ge(R1,R2) Z?Si(R3,R4); Ge(R3,R4); O; S; C(R3,R4) Y?O; S; C(R5,R6) T=O; S; C(R7,R8) R1, R2, R3, R4, R5, R6, R7, R8 are selected from hydrogen, linear, branched or cyclic alkyl groups, with or without heteroatoms, and aromatic groups with or without heteroatoms.Type: ApplicationFiled: December 11, 2014Publication date: November 17, 2016Applicants: CENTRE NATIONAL DE LA RECHERCHE SCIENTIFIQUE (CNRS), UNIVERSITE DE BORDEAUX, INSTITUT POLYTECHNIQUE DE BORDEAUX, ARKEMA FRANCEInventors: Muhammad MUMTAZ, Karim AISSOU, Cyril BROCHON, Eric CLOUTET, Guillaume FLEURY, Georges HADZIIOANNOU, Christophe NAVARRO, Celia NICOLET, Xavier CHEVALIER
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Publication number: 20160333221Abstract: The invention relates to a process that enables the creation of nanometric structures by self-assembly of block copolymers, at least one of the blocks of which is crystallizable or has at least one liquid crystal phase.Type: ApplicationFiled: December 11, 2014Publication date: November 17, 2016Applicants: CENTRE NATIONAL DE LA RECHERCHE SCIENTIFIQUE (CNRS), UNIVERSITE DE BORDEAUX, INSTITUT POLYTECHNIQUE DE BORDEAUX, ARKEMA FRANCEInventors: Muhammad MUMTAZ, Karim AISSOU, Cyril BROCHON, Eric CLOUTET, Guillaume FLEURY, Georges HADZIIOANNOU, Christophe NAVARRO, Celia NICOLET, Xavier CHEVALIER
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Publication number: 20160319158Abstract: The invention relates to a process for producing a film of self-assembled block copolymers on a substrate, said process consisting in carrying out a simultaneous deposition of block copolymer and of random copolymer by means of a solution containing a blend of block copolymer and of random copolymer of different chemical nature and which are immiscible, then in carrying out an annealing treatment allowing the promotion of the phase segregation inherent in the self-assembly of block copolymers.Type: ApplicationFiled: December 10, 2014Publication date: November 3, 2016Applicants: CENTRE NATIONAL DE LA RECHERCHE SCIENTIFIQUE (CNRS), UNIVERSITE DE BORDEAUX, INSTITUT POLYTECHNIQUE DE BORDEAUX, ARKEMA FRANCEInventors: Guillaume FLEURY, Christophe NAVARRO, Georges HADZIIOANNOU, Celia NICOLET, Xavier CHEVALIER, Chrystilla REBOUL, Veronica CASTILLO, Gilles PECASTAINGS
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Publication number: 20160276053Abstract: The invention relates to a stable composition of poly(3,4-ethylenedioxythiophene) anionic stabilizers with a limited degree of acidity.Type: ApplicationFiled: October 29, 2014Publication date: September 22, 2016Applicants: Arkema France, Centre National De La Recherche Scientifique (CNRS), Universite De Bordeaux, Institut Polytechnique De BordeauxInventors: Christophe NAVARRO, Wiljan SMAAL, Muhammad MUMTAZ, Eric CLOUTET, Cyril BROCHON, Georges HADZIIOANNOU