Patents by Inventor Bernard Cathala

Bernard Cathala 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: 11332600
    Abstract: Disclosed is a method for producing nanocelluloses from a cellulose substrate including cellulose fibers, the method including the following sequence of steps: —a step of enzymatic treatment of the cellulose substrate, by bringing same into contact with at least one cleaving enzyme, then—a step of mechanical treatment of the cellulose substrate subjected to the step of enzymatic treatment, in order to delaminate the cellulose fibres and obtain the nanocelluloses. The at least one cleaving enzyme is chosen from the enzymes belonging to the family of lytic polysaccharide monooxygenases (LPMOs) capable of achieving cleavage in the presence of an electron donor. Also disclosed are the nanocelluloses obtained according to the method.
    Type: Grant
    Filed: June 1, 2016
    Date of Patent: May 17, 2022
    Assignee: INSTITUT NATIONAL DE RECHERCHE POUR L'AGRICULTURE, L'ALIMENTATION ET L'ENVIRONNEMENT
    Inventors: Bernard Cathala, Ana Villares, Jean-Guy Berrin, Celine Moreau
  • Publication number: 20200182787
    Abstract: A process for detecting the sensitivity of one or more polymers and/or of one or more mixtures of polymers to a compound, including the steps of exposing a plurality of individualized micro-deposits including the polymer(s) and/or the mixture(s) of polymers to the compound, and detecting, by interferometry, a variation in appearance of an assembly of micro-deposits exposed to the compound and or a variation in the dimensions and/or refractive index of at least one of the micro-deposits exposed to the compound, linked to an interaction between the polymer(s) and or the mixture(s) of polymers and the compound.
    Type: Application
    Filed: June 1, 2018
    Publication date: June 11, 2020
    Inventors: Vincent Senez, Alexis Vlandas, Sebastien Lamant, Bernard Cathala, Celine Moreau, Gabrielle Veronese, Sophie Bozonnet, Elisabeth Laville, Megane Cleret
  • Publication number: 20200157591
    Abstract: Celluloses, notably nanocelluloses, and more particularly processes for manufacturing cellulose fibers and for defibrillating cellulose-based substrates. Most particularly, processes for defibrillating cellulose-based substrates and manufacturing celluloses, in particular nanocelluloses (NC), using a new family of fungal lytic polysaccharide monooxygenases (LPMOs).
    Type: Application
    Filed: July 31, 2018
    Publication date: May 21, 2020
    Applicant: INSTITUT NATIONAL DE LA RECHERCHE AGRONOMIQUE (INRA)
    Inventors: Bernard CATHALA, Jean-Guy BERRIN, Ana VILLARES, Céline MOREAU
  • Publication number: 20180142084
    Abstract: Disclosed is a method for producing nanocelluloses from a cellulose substrate including cellulose fibers, the method including the following sequence of steps: a step of enzymatic treatment of the cellulose substrate, by bringing same into contact with at least one cleaving enzyme, then a step of mechanical treatment of the cellulose substrate subjected to the step of enzymatic treatment, in order to delaminate the cellulose fibres and obtain the nanocelluloses. The at least one cleaving enzyme is chosen from the enzymes belonging to the family of lytic polysaccharide monooxygenases (LPMOs) capable of achieving cleavage in the presence of an electron donor. Also disclosed are the nanocelluloses obtained according to the method.
    Type: Application
    Filed: June 1, 2016
    Publication date: May 24, 2018
    Applicant: INSTITUT NATIONAL DE LA RECHERCHE AGRONOMIQUE-INRA
    Inventors: Bernard CATHALA, Ana VILLARES, Jean-Guy BERRIN, Celine MOREAU
  • Patent number: 9789456
    Abstract: The composition, advantageously an emulsion or a foam, includes an internal phase dispersed in a hydrophilic continuous phase, the percentage of the internal phase being higher than 50%. The emulsion composition contains nanocrystals of a polysaccharide other than cellulose, advantageously chitin, that are located at the interface between the internal phase and the hydrophilic continuous phase.
    Type: Grant
    Filed: October 15, 2013
    Date of Patent: October 17, 2017
    Assignee: INSTITUT NATIONAL DE LA RECHERCHE AGRONOMIQUE—INRA
    Inventors: Isabelle Capron, Herve Bizot, Bernard Cathala
  • Patent number: 9260551
    Abstract: The present invention relates to a composition in the form of an emulsion, advantageously a Pickering emulsion, comprising a hydrophobic phase dispersed in an aqueous phase, which composition contains emulsifying particles capable of stabilizing said emulsion, at least some of said particles consisting of cellulose nanocrystals having an elongated shape, which have the following features: a length between 25 nm to 1 ?m, and a width between 5 to 30 nm.
    Type: Grant
    Filed: July 18, 2011
    Date of Patent: February 16, 2016
    Assignee: INSTITUT NATIONAL DE LA RECHERCHE AGRONOMIQUE
    Inventors: Bernard Cathala, Isabelle Capron, Hervé Bizot, Alain Buleon, Irina Kalashnikova
  • Patent number: 9217171
    Abstract: This invention concerns a colorimetric device for detecting, in an aqueous solution of interest, a hydrolytic enzymatic activity with regard to at least one polymer of interest. This device (1) includes (i) a substrate (2) and (ii) a transparent detection layer (3), including the said polymer of interest. This detection layer (3) is adapted so that, on the one hand, after application of the said aqueous solution of interest, when it is deprived of said hydrolytic enzymatic activity, it preserves the said first thickness e, and on the other, after the application of the said aqueous solution of interest, when it includes the said hydrolytic enzymatic activity, it has a second thickness e?, thinner than the said first thickness e, and the said first thickness e and/or the said second thickness e? of the said detection layer (3) are adapted to generate a color by an optical interference phenomenon caused by the recombining of the light beams reflected at the interfaces (4, 5) of the said detection layer (5).
    Type: Grant
    Filed: July 6, 2011
    Date of Patent: December 22, 2015
    Assignee: INSTITUT NATIONAL DE LA RECHERCHE AGRONOMIQUE
    Inventors: Bernard Cathala, Carole Cerclier
  • Publication number: 20150273420
    Abstract: The composition, advantageously an emulsion or a foam, includes an internal phase dispersed in a hydrophilic continuous phase, the percentage of the internal phase being higher than 50%. The emulsion composition contains nanocrystals of a polysaccharide other than cellulose, advantageously chitin, that are located at the interface between the internal phase and the hydrophilic continuous phase.
    Type: Application
    Filed: October 15, 2013
    Publication date: October 1, 2015
    Applicant: INSTITUT NATIONAL DE LA RECHERCHE AGRONOMIQUE-INRA
    Inventors: Isabelle Capron, Herve Bizot, Bernard Cathala
  • Publication number: 20140073706
    Abstract: The invention relates to a method for producing an emulsion including a hydrophobic internal phase dispersed in a hydrophilic continuous phase, of the medium internal phase (MIPE) or high internal phase (HIPE) type, which has an internal phase percentage higher than 55%, comprising the following steps: a) producing an oil-in-water emulsion composition that has a hydrophobic phase/hydrophilic phase volume ratio of at least 5/95, including a step for incorporating cellulose nanocrystals into said hydrophilic phase, and a step for forming the emulsion by dispersing said hydrophobic phase in said hydrophilic phase, and b) producing an emulsion that has an internal phase percentage higher than 55%, including: b.1) a step for adding a volume of hydrophobic phase to the emulsion composition produced in Step a), and stirring the mixture thereby produced, and/or b.2) a step for concentrating the emulsion composition produced in Step a), by removing at least part of said hydrophilic phase.
    Type: Application
    Filed: April 20, 2012
    Publication date: March 13, 2014
    Inventors: Isabelle Capron, Bernard Cathala, Hervé Bizot
  • Publication number: 20130122071
    Abstract: The present invention relates to a composition in the form of an emulsion, advantageously a Pickering emulsion, comprising a hydrophobic phase dispersed in an aqueous phase, which composition contains emulsifying particles capable of stabilizing said emulsion, at least some of said particles consisting of cellulose nanocrystals having an elongated shape, which have the following features: a length between 25 nm to 1 ?m, and a width between 5 to 30 nm.
    Type: Application
    Filed: September 15, 2011
    Publication date: May 16, 2013
    Inventors: Bernard Cathala, Isabelle Capron, Hervé Bizot, Alain Buleon, Irina Kalashnikova
  • Publication number: 20130115643
    Abstract: This invention concerns a colorimetric device for detecting, in an aqueous solution of interest, a hydrolytic enzymatic activity with regard to at least one polymer of interest. This device (1) includes (i) a substrate (2) and (ii) a transparent detection layer (3), including the said polymer of interest. This detection layer (3) is adapted so that, on the one hand, after application of the said aqueous solution of interest, when it is deprived of said hydrolytic enzymatic activity, it preserves the said first thickness e, and on the other, after the application of the said aqueous solution of interest, when it includes the said hydrolytic enzymatic activity, it has a second thickness e?, thinner than the said first thickness e, and the said first thickness e and/or the said second thickness e? of the said detection layer (3) are adapted to generate a colour by an optical interference phenomenon caused by the recombining of the light beams reflected at the interfaces (4, 5) of the said detection layer (5).
    Type: Application
    Filed: July 6, 2011
    Publication date: May 9, 2013
    Inventors: Bernard Cathala, Carole Cerclier