Patents by Inventor Celine Cohen

Celine Cohen 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).

  • Publication number: 20210284982
    Abstract: The present invention relates to a method for producing enzymes by a strain belonging to a filamentous fungus, which comprises three steps: (a) a first step of growing biomass, in the presence of at least one carbon-based growth substrate in a stirred and aerated bioreactor (1) in batch phase, (b) a second step of diluting the culture medium obtained in the first step (a), (c) a third step of producing enzymes from the diluted culture medium obtained in the second step (b), in the presence of at least one inductive carbon-based substrate, in fed-batch phase.
    Type: Application
    Filed: August 26, 2019
    Publication date: September 16, 2021
    Applicant: IFP Energies Nouvelles
    Inventors: Mohamed Fadhel BEN CHAABANE, Celine COHEN, Bernard CHAUSSEPIED, Frederic AUGIER
  • Patent number: 10822600
    Abstract: The invention relates to a process for producing cellulolytic or hemicellulolytic enzymes comprising A growth phase a) of a cellulolytic microorganism in a closed reactor, in the presence of at least one carbonaceous growth substrate in a concentration between 10 and 90 g/L, at a temperature of 25-30° C. and a pH of 4-5.5 An enzyme production phase b) in which at least one inducer carbonaceous substrate is added, at a temperature of 25-27° C. and a pH of 4-5, process in which the said inducer substrate is a pretreated pomace obtained from a pretreatment process of lignocellulosic material that has not undergone enzymatic hydrolysis and that is added in fed-batch or continuous mode, and which has particular characteristics: a hydrolysis yield greater than 80% in a test and an apparent viscosity, measured in the test, of less than 1 Pa·s for a shear rate of 10 s?1.
    Type: Grant
    Filed: March 24, 2017
    Date of Patent: November 3, 2020
    Assignees: IFP Energies nouvelles, AGRO INDUSTRIES RECHERCHE ET DEVELOPPEMENT, INSTITUT NATIONAL DE LA RECHERCHE AGRONOMIQUE
    Inventors: Mohamed Fadhel Ben Chaabane, Celine Cohen
  • Patent number: 10577668
    Abstract: The present invention relates to a Trichoderma reesei strain which is hyper-producing and which has enhanced ?-glucosidase activity, as well as the use of said strain.
    Type: Grant
    Filed: September 26, 2018
    Date of Patent: March 3, 2020
    Assignee: IFP Energies Nouvelles
    Inventors: Frédérique Bidard-Michelot, Laetitia Chan Ho Tong, Antoine Margeot, Céline Cohen
  • Publication number: 20190100814
    Abstract: The present invention relates to a Trichoderma reesei strain which is hyper-producing and which has enhanced ?-glucosidase activity, as well as the use of said strain.
    Type: Application
    Filed: September 26, 2018
    Publication date: April 4, 2019
    Applicant: IFP Energies Nouvelles
    Inventors: Frédérique Bidard-Michelot, Laetitia Chan Ho Tong, Antoine Margeot, Céline Cohen
  • Publication number: 20190085310
    Abstract: The invention relates to a process for producing cellulolytic or hemicellulolytic enzymes comprising A growth phase a) of a cellulolytic microorganism in a closed reactor, in the presence of at least one carbonaceous growth substrate in a concentration between 10 and 90 g/L, at a temperature of 25-30° C. and a pH of 4-5.5 An enzyme production phase b) in which at least one inducer carbonaceous substrate is added, at a temperature of 25-27° C. and a pH of 4-5, process in which the said inducer substrate is a pretreated pomace obtained from a pretreatment process of lignocellulosic material that has not undergone enzymatic hydrolysis and that is added in fed-batch or continuous mode, and which has particular characteristics: a hydrolysis yield greater than 80% in a test and an apparent viscosity, measured in the test, of less than 1 Pa·s for a shear rate of 10 s?1.
    Type: Application
    Filed: March 24, 2017
    Publication date: March 21, 2019
    Applicants: IFP Energies nouvelles, AGRO INDUSTRIES RECHERCHE ET DEVELOPPEMENT, INSTITUT NATIONAL DE LA RECHERCHE AGRONOMIQUE
    Inventors: Mohamed Fadhel BEN CHAABANE, Celine COHEN
  • Patent number: 10214734
    Abstract: The invention relates to a process for the production of an enzymatic cocktail from a cellulolytic microorganism producing cellulases and/or hemi-cellulases, comprising: a step for the production of enzymes with a medium being obtained containing enzymes and a microorganism must, said must is separated, or not separated, from the liquid containing said enzymes, a step of cooling said must to a temperature below the temperature of the enzyme production step and for a time such that the beta-glucosidase concentration of the liquid originating from the cooling step is greater than that of the liquid originating from the enzyme production step, and/or the solid volume/total volume ratio is less than said ratio for the enzyme production step, and an enzymatic cocktail is obtained at the end of the cooling step.
    Type: Grant
    Filed: July 27, 2015
    Date of Patent: February 26, 2019
    Assignee: IFP Energies nouvelles
    Inventors: Fadhel Ben Chaabane, Etienne Jourdier, Celine Cohen, Bernard Chaussepied
  • Publication number: 20170211051
    Abstract: The invention relates to a process for the production of an enzymatic cocktail from a cellulolytic microorganism producing cellulases and/or hemi-cellulases, comprising: a step for the production of enzymes with a medium being obtained containing enzymes and a microorganism must, said must is separated, or not separated, from the liquid containing said enzymes, a step of cooling said must to a temperature below the temperature of the enzyme production step and for a time such that the beta-glucosidase concentration of the liquid originating from the cooling step is greater than that of the liquid originating from the enzyme production step, and/or the solid volume/total volume ratio is less than said ratio for the enzyme production step, and an enzymatic cocktail is obtained at the end of the cooling step.
    Type: Application
    Filed: July 27, 2015
    Publication date: July 27, 2017
    Applicant: IFP Energies nouvelles
    Inventors: Fadhel BEN CHAABANE, Etienne JOURDIER, Celine COHEN, Bernard CHAUSSEPIED
  • Patent number: 8956846
    Abstract: The present invention relates to a method of producing cellulolytic and/or hemicellulolytic enzymes by a cellulolytic microorganism in a stirred and aerated bioreactor, comprising a growth stage in the presence of a carbon source and a production stage in the presence of a carbon-containing inductive substrate, wherein the supply of carbon-containing inductive substrate during the production stage is regulated by an oscillation of the dissolved oxygen partial pressure in the medium.
    Type: Grant
    Filed: March 24, 2011
    Date of Patent: February 17, 2015
    Assignee: IFP Energies nouvelles
    Inventors: Fadhel Ben Chaabane, Celine Cohen
  • Publication number: 20140302587
    Abstract: The present invention concerns a process for the production of cellulases using a strain of a filamentous fungus in a stirred, aerated bioreactor, comprising at least two growth steps: the first growth step in the presence of at least one carbonaceous growth substrate in batch phase with a concentration of carbonaceous growth substrate in the range 10 to 80 g/L; a second step for growth and production in the presence of at least one inducer carbonaceous substrate in fed batch phase in the presence of a limiting flow of carbon source in the range 50 to 140 mg per gram of cells per hour.
    Type: Application
    Filed: August 2, 2012
    Publication date: October 9, 2014
    Applicants: IFP ENERGIES NOUVELLES, AGRO INDUSTRIES RECHERCHE ET DEVELOPPEMENT, INSTITUT NATIONAL DE LA RECHERCHE AGRONOMIQUE
    Inventors: Fadhel Ben Chaabane, Etienne Jourdier, Celine Cohen, Bernard Chaussepied
  • Publication number: 20110236954
    Abstract: The present invention relates to a method of producing cellulolytic and/or hemicellulolytic enzymes by a cellulolytic microorganism in a stirred and aerated bioreactor, comprising a growth stage in the presence of a carbon source and a production stage in the presence of a carbon-containing inductive substrate, wherein the supply of carbon-containing inductive substrate during the production stage is regulated by an oscillation of the dissolved oxygen partial pressure in the medium.
    Type: Application
    Filed: March 24, 2011
    Publication date: September 29, 2011
    Applicant: IFP Energies nouvelles
    Inventors: Fadhel BEN CHAABANE, Celine Cohen