Patents by Inventor Yohann Guillaneuf

Yohann Guillaneuf 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).

  • Patent number: 11124584
    Abstract: The invention pertains to an improved PVDC composition including certain dienophiles qualified for food contact, which possess an optimized balance of effectiveness in preventing discoloration upon exposure to radiation, with no negative impact on the barrier properties, in particular sorbate esters of formula (I), wherein R1 is a C1-C12 hydrocarbon group, preferably a C1-C6 alkyl group, to layers made therefrom, to multi-layer assemblies comprising the same, and to the use of said assemblies for packaging, in particular for packaging foodstuffs.
    Type: Grant
    Filed: November 25, 2016
    Date of Patent: September 21, 2021
    Assignees: Solvay SA, Centre National de la Recherche Scientifique, Université d'Aix-Marseille
    Inventors: Elodie Chauvet, Didier Gigmes, Yohann Guillaneuf, Agnès Chapotot, Jérôme Vinas, Pascal Dewael, Yves Vanderveken
  • Publication number: 20200360889
    Abstract: A method for manufacturing microcapsules containing an active substance, the method including: providing an aqueous solution of a surfactant, an oily phase comprising the active substance and a first monomer, and a polar phase comprising a second monomer; preparing an oil-in-water emulsion by adding the oily phase to the aqueous solution of the surfactant; adding the polar phase to the oil-in-water emulsion, in order to obtain a polymer in a reaction mixture, by polymerization of the first monomer and the second monomer; isolating the microcapsules, including a wall formed by the polymer and containing the active substance, from the reaction mixture; wherein the polymer is a poly(beta-amino ester). Microcapsules obtained by the method.
    Type: Application
    Filed: May 16, 2020
    Publication date: November 19, 2020
    Applicants: GEM INNOV, UNIVERSITÉ D'AIX MARSEILLE, CENTRE NATIONAL DE LA RECHERCHE SCIENTIFIQUE
    Inventors: Yves ORTAIS, Thierry RIBEIRO, Kaouthar OUDOUA, The Hien HO, Didier GIGMES, Catherine GUILLANEUF, Yohann GUILLANEUF
  • Publication number: 20200224022
    Abstract: A solid organic material comprising at least one amphiphilic block copolymer of the methacrylic type, the block copolymer being dispersed in a polymer matrix, the block copolymer having a number-average molar mass (Mn) greater than or equal to 20 000 g/mol; a method for preparing said solid organic material; use of said solid organic material for antibacterial, antimicrobial, antiviral, anti-inflammatory and/or antifungal applications; a medical device comprising said solid organic material.
    Type: Application
    Filed: July 6, 2018
    Publication date: July 16, 2020
    Applicants: Centre National de la Recherche Scientifique, UNIVERSITÉ D'AIX MARSEILLE, Ecole Centrale de Marseille
    Inventors: Didier Gigmes, Yohann Guillaneuf, Catherine Guillaneuf, Marc René Sauveur Maresca, Cédric Ysacco
  • Publication number: 20180355080
    Abstract: The invention pertains to an improved PVDC composition including certain dienophiles qualified for food contact, which possess an optimized balance of effectiveness in preventing discoloration upon exposure to radiation, with no negative impact on the barrier properties, in particular sorbate esters of formula (I), wherein R1 is a C1-C12 hydrocarbon group, preferably a C1-C6 alkyl group, to layers made therefrom, to multi-layer assemblies comprising the same, and to the use of said assemblies for packaging, in particular for packaging foodstuffs.
    Type: Application
    Filed: November 25, 2016
    Publication date: December 13, 2018
    Inventors: Elodie CHAUVET, Didier GIGMES, Yohann GUILLANEUF, Agnès CHAPOTOT, Jérôme VINAS, Pascal DEWAEL, Yves VANDERVEKEN
  • Publication number: 20180355147
    Abstract: The invention pertains to an improved PVDC composition including certain cinnamate dienophiles qualified for food contact, which possess an optimized balance of effectiveness in preventing discoloration upon exposure to radiation, with no negative impact on the barrier properties, in particular cinnamates of formula (I), wherein: —each of R1, R2, R3, equal to or different from each other, is H or a C1-C12 hydrocarbon group, to layers made therefrom, to multi-layer assemblies comprising the same, and to the use of said assemblies for packaging, in particular for packaging foodstuffs.
    Type: Application
    Filed: November 25, 2016
    Publication date: December 13, 2018
    Inventors: Elodie CHAUVET, Didier GIGMES, Yohann GUILLANEUF, Agnès CHAPOTOT, Jérôme VINAS, Pascal DEWAEL, Yves VANDERVEKEN
  • Publication number: 20090221850
    Abstract: The present invention relates to a novel process for preparing alkoxyamines from a nitroxide and a dithiocarbamate by photolysis reaction. This process, which does not generate effluent containing metals, may be carried out in batch or in continuous mode and takes place at a lower temperature than the known processes for synthesizing alkoxyamines.
    Type: Application
    Filed: April 13, 2006
    Publication date: September 3, 2009
    Inventors: Denis Bertin, Jean-Luc Couturier, Didier Gigmes, Olivier Guerret, Yohann Guillaneuf
  • Publication number: 20080274074
    Abstract: The invention relates to a method for the polymerization of one or more methacrylate and/or methacrylic monomers, for the synthesis of methacrylate or methacrylic polymers or of exclusively methacrylic and/or methacrylate copolymers, comprising a step of bringing said monomer(s) into contact with one at least of the compounds of formula (I) and (II) below: in which: R1 and R2 may represent a phenyl group, R3 and R4 may together form an ?N-phenyl group, Z represents a group of formula —CR8R9R10, in which R8 and R9 may represent methyl groups and R10 may represent a —COO-phenyl group.
    Type: Application
    Filed: November 24, 2006
    Publication date: November 6, 2008
    Applicant: Arkema France
    Inventors: Jean-Luc Couturier, Yohann Guillaneuf, Denis Bertin, Didior Gigmes
  • Publication number: 20080221354
    Abstract: The present invention relates to a process for the preparation of the alkoxyamine 2-methyl-2-[N-(diethoxy-phosphoryl-2,2-dimethylpropyl)aminoxy]propionic acid or of its salts comprising a stage of saponification of an azo compound in the presence of a base, a stage of photolysis of the salt resulting from the saponification stage in the presence of N-(tert-butyl)-1-diethylphosphono-2,2-dimethylpropyl nitroxide and optionally a stage of acidification of the salt of the alkoxyamine obtained on conclusion of the photolysis stage. The alkoxyamine or its salts can be used as radical polymerization initiators.
    Type: Application
    Filed: May 10, 2005
    Publication date: September 11, 2008
    Inventors: Jean-Luc Couturier, Didier Gigmes, Olivier Guerret, Yohann Guillaneuf