Patents by Inventor Stéphane DESGRANGES
Stéphane DESGRANGES 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: 20250295818Abstract: The present invention relates to calibrated dual-phase nanodroplets comprising an outer layer and an inner core, said outer layer comprising a biocompatible fluorinated surfactant and said inner core comprising a fluorinated compound and a biocompatible oil. The invention further relates to a method of preparation of said calibrated dual-phase nanodroplets through microfluidic technique, and to their use for in vivo or in vitro diagnostic and/or for therapy.Type: ApplicationFiled: May 11, 2023Publication date: September 25, 2025Inventors: Romain MELICH, Philippe BUSSAT, Samir CHERKAOUI, Christiane CONTINO-PEPIN, Stéphane DESGRANGES
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Publication number: 20250213733Abstract: The present description relates to an emulsion comprising an amphiphilic compound, a first phase comprising droplets including at least one perfluorocarbon compound and a second phase, which is aqueous. The droplets have a diameter d4,3 of between 0.5 pm and 5.5 pm, and the at least one perfluorocarbon compound has a boiling point above 100° C. The present description also relates to such an emulsion for use as an improving agent in ultrasound ablation surgery (FIG. 3).Type: ApplicationFiled: February 12, 2025Publication date: July 3, 2025Applicants: Avignon Université, CENTRE NATIONAL DE LA RECHERCHE SCIENTIFIQUE - CNRS, INSTITUT NATIONAL DE LA SANTÉ ET DE LA RECHERCHE MÉDICALE, Sorbonne Université, UNIVERSITE DE MONTPELLIER, ECOLE NATIONALE SUPERIEURE DE CHIMIE DE MONTPELLIERInventors: Christiane Contino-Pepin, Stéphane Desgranges, Nicolas Taulier
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Publication number: 20250186343Abstract: An emulsion comprises a first discontinuous phase comprising first droplets, a second discontinuous phase comprising second droplets, and a continuous aqueous phase. The first droplets include at least one first surfactant and at least one first fluorocarbon, and have a first diameter of more than 100 nm. The second droplets include at least one surfactant, at least one drug, and at least one solvent, and have a second diameter of no more than 100 nm.Type: ApplicationFiled: March 9, 2023Publication date: June 12, 2025Applicants: Avignon Université, Centre national de la recherche scientifique, INSTITUT NATIONAL DE LA SANTE ET DE LA RECHERCHE MEDICALE (INSERM), Sorbonne Université, Université de Tours, Université de Paris CitéInventors: Wlodzimierz Urbach, Stéphane Desgranges, Rashmi Ramesh, Nicolas Taulier, Jean-Michel Escoffre, Christiane Contino-Pepin
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Patent number: 12251451Abstract: The present description relates to an injectable emulsion comprising an amphiphilic compound, a first phase comprising droplets including at least one perfluorocarbon compound and a second phase, which is aqueous. The droplets have a diameter d4,3 of between 0.5 pm and 5.5 pm, and the at least one perfluorocarbon compound has a boiling point above 100° C. The present description also relates to methods comprising administering such an injectable emulsion in, for example, ultrasound ablation surgery (FIG. 3).Type: GrantFiled: June 14, 2019Date of Patent: March 18, 2025Assignees: Avignon Université, CENTRE NATIONAL DE LA RECHERCHE SCIENTIFIQUE—CNRS, INSTITUT NATIONAL DE LA SANTÉ ET DE LA RECHERCHE MÉDICALE, Sorbonne Université, UNIVERSITE DE MONTPELLIER, ECOLE NATIONALE SUPERIEURE DE CHIMIE DE MONTPELLIERInventors: Christiane Contino-Pepin, Stéphane Desgranges, Nicolas Taulier
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Patent number: 12016957Abstract: The present description relates to a method for extracting at least one substance of interest, the method comprising the following steps: —providing an admixture comprising water, a source comprising the at least one substance of interest or at least one precursor thereof, at least one surfactant and at least one lipophilic compound; —the emulsification of the admixture, leading to the formation of an emulsion; wherein the emulsion comprises: —a continuous aqueous phase; and a discontinuous lipidic phase comprising the at least one lipophilic compound, the at least one surfactant and at least one substance of interest extracted from the source during the emulsification; wherein the method further comprises the addition of at least one cryoprotectant to the admixture and the lyophilization of the emulsion.Type: GrantFiled: November 27, 2019Date of Patent: June 25, 2024Assignees: AVIGNON UNIVERSITE, LYOFAL, CENTRE NATIONAL DE LA RECHERCHE SCIENTIFIQUE, ECOLE NATIONALE SUPERIEURE DE CHIMIE DE MONTPELLIER, UNIVERSITE DE MONTPELLIERInventors: Christiane Contino-Pepin, Stéphane Desgranges, Alice Dall'armellina, Charles Duval, Mathias Letan-Martin
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Publication number: 20230404920Abstract: The present invention relates to calibrated (per)fluorocarbon nanodroplets comprising an outer layer and an inner core, said outer layer comprising a biocompatible fluorinated surfactant and said inner core comprising a (per)fluorocarbon. The invention further relates to a method of preparation of said calibrated (per)fluorocarbon nanodroplets through microfluidic technique, and to their use for in vivo or in vitro diagnostic and/or for therapy.Type: ApplicationFiled: November 11, 2021Publication date: December 21, 2023Inventors: Romain MELICH, Philippe BUSSAT, Samir CHERKAOUI, Christiane CONTINO-PEPIN, Stéphane DESGRANGES
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Publication number: 20230191383Abstract: A dry formulation obtained by desiccation of an emulsion comprises at least one surfactant, at least one lipophilic compound, and at least one metal catalyst. The dry formulation may be used to carry out a catalysed reaction in an aqueous medium. The dry formulation has a water content of less than (10) wt% relative to the total weight of the dry formulation, and wherein: - the at least one surfactant is selected from the group comprising dendrimers of Dendri-TAC type, oligomers of F,TACn or H,TACn type, TPGS 1000, TPGS 750 M, surfactants derived from sugars and/or amino acids, and combinations thereof; - the at least one lipophilic compound is selected from the group comprising lipids, hydrophobic complexing agents and combinations thereof; and - the metal catalyst comprises a metal selected from Groups (3) to (12) of the Periodic Table.Type: ApplicationFiled: May 27, 2021Publication date: June 22, 2023Inventors: Frédéric Bihel, Damien Bourgeois, Christiane Contino-Pepin, Stéphane Desgranges, Valentin Lacanau
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Publication number: 20220008340Abstract: The present description relates to a method for extracting at least one substance of interest, the method comprising the following steps: —providing an admixture comprising water, a source comprising the at least one substance of interest or at least one precursor thereof, at least one surfactant and at least one lipophilic compound; —the emulsification of the admixture, leading to the formation of an emulsion; wherein the emulsion comprises: —a continuous aqueous phase; and a discontinuous lipidic phase comprising the at least one lipophilic compound, the at least one surfactant and at least one substance of interest extracted from the source during the emulsification; wherein the method further comprises the addition of at least one cryoprotectant to the admixture and the lyophilisation of the emulsion.Type: ApplicationFiled: November 27, 2019Publication date: January 13, 2022Applicants: AVIGNON UNIVERSITE, LYOFAL, Centre National de la Recherche Scientifique, ECOLE NATIONALE SUPERIEURE DE CHIMIE DE MONTPELLIER, UNIVERSITE DE MONTPELLIERInventors: Christiane Contino-Pepin, Stéphane Desgranges, Alice Dall`armellina, Charles Duval, Mathias Letan-Martin
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Publication number: 20210252172Abstract: The present description relates to an emulsion comprising an amphiphilic compound, a first phase comprising droplets including at least one perfluorocarbon compound and a second phase, which is aqueous. The droplets have a diameter d4,3 of between 0.5 pm and 5.5 pm, and the at least one perfluorocarbon compound has a boiling point above 100° C. The present description also relates to such an emulsion for use as an improving agent in ultrasound ablation surgery (FIG. 3).Type: ApplicationFiled: June 14, 2019Publication date: August 19, 2021Applicants: AVIGNON UNIVERSITE, CENTRE NATIONAL DE LA RECHERCHE SCIENTIFIQUE - CNRS, INSTITUT NATIONAL DE LA SANTÉ ET DE LA RECHERCHE MÉDICALE, SORBONNE UNIVERSITE, UNIVERSITE DE MONTPELLIER, ECOLE NATIONALE SUPERIEURE DE CHIMIE DE MONTPELLIERInventors: Christiane Contino-Pepin, Stéphane Desgranges, Nicolas Taulier
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Patent number: 10752976Abstract: The present invention is in the field of surfactants to extract a platinum group metal or gold, in particular palladium, from organic compositions. In particular, the invention concerns the use of surfactants to back-extract a platinum group metal or gold, in particular palladium, from organic compositions further comprising an extractant of said platinum group metal or gold, in particular palladium from an aqueous solution.Type: GrantFiled: May 19, 2017Date of Patent: August 25, 2020Assignees: Universite de Strasbourg, Centre National de la Recherche Scientifique, Avignon Universite, Comissariat a l'Energie Atomique et aux Energies AlternativesInventors: Frédéric Jean-Jacques Bihel, Damien Bourgeois, Stéphane Desgranges, Daniel Meyer, Christiane Contino-Pepin, Martine Schmitt, Patrick Hervé Denis Wagner
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Publication number: 20190316223Abstract: The present invention is in the field of surfactants to extract a platinum group metal or gold, in particular palladium, from organic compositions. In particular, the invention concerns the use of surfactants to back-extract a platinum group metal or gold, in particular palladium, from organic compositions further comprising an extractant of said platinum group metal or gold, in particular palladium from an aqueous solution.Type: ApplicationFiled: May 19, 2017Publication date: October 17, 2019Applicants: Centre National de la Recherche Scientifique, Universite d'Avignon et des Pays de Vaucluse, Universite de Strasbourg, Commissariat a l'Energie Atomique et aux Energies Alternatives, Ecole Nationale Superieure de Chimie de Montpellier, Universite de MontpellierInventors: Frédéric Jean-Jacques Bihel, Damien Bourgeois, Stéphane Desgranges, Daniel Meyer, Christiane Contino-Pepin, Martine Schmitt, Patrick Hervé Denis Wagner
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Patent number: 10286091Abstract: The present invention relates to novel amphiphilic dendrimers, hereafter denoted Dendri-TAC. The present invention also relates to perfluorocarbon nanoemulsions stabilized by these amphiphilic dendrimers and their uses for in vivo diagnostic and/or for therapy, notably as theranostic tools, for detection and/or treatment of cancer.Type: GrantFiled: May 19, 2016Date of Patent: May 14, 2019Assignees: UNIVERSITE D'AVIGNON ET DES PAYS DU VAUCLUSE, CENTRE NATIONAL DE LA RECHERCHE SCIENTIFIQUEInventors: Stéphane Desgranges, Wlodzimierz Urbach, Lucie Somaglino, Nicolas Taulier, Christiane Pepin
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Publication number: 20180126011Abstract: The present invention relates to novel amphiphilic dendrimers, hereafter denoted Dendri-TAC. The present invention also relates to perfluorocarbon nanoemulsions stabilized by these amphiphilic dendrimers and their uses for in vivo diagnostic and/or for therapy, notably as theranostic tools, for detection and/or treatment of cancer.Type: ApplicationFiled: May 19, 2016Publication date: May 10, 2018Inventors: Stéphane DESGRANGES, Wlodzimierz URBACH, Lucie SOMAGLINO, Nicolas TAULIER, Christiane PEPIN