Patents by Inventor Sophie Duquesne

Sophie Duquesne 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: 11926851
    Abstract: The present invention relates to esterases, more particularly to esterase variants having improved activity and/or improved thermostability compared to the esterase of SEQ ID NO: 1 and the uses thereof for degrading polyester containing material, such as plastic products. The esterases of the invention are particularly suited to degrade polyethylene terephthalate, and material containing polyethylene terephthalate.
    Type: Grant
    Filed: December 22, 2022
    Date of Patent: March 12, 2024
    Assignee: CARBIOS
    Inventors: Benoît David, Isabelle Andre, Maher Ben Khaled, Sophie Duquesne, Alain Marty
  • Publication number: 20240059859
    Abstract: The present invention relates to novel proteases, more particularly to protease variants having improved thermostability compared to the protease of SEQ ID NO: 1 and the uses thereof for degrading polyester containing material, such as plastic products. The proteases of the invention are particularly suited to degrade polylactic acid, and material containing polylactic acid.
    Type: Application
    Filed: December 21, 2021
    Publication date: February 22, 2024
    Inventors: YOUNES BOUCHIBA, ISABELLE ANDRE, SOPHIE BARBE, SOPHIE DUQUESNE
  • Patent number: 11851689
    Abstract: The present invention relates to novel esterases, more particularly to esterase variants having improved activity and/or improved thermostability compared to the esterase of SEQ ID NO:1 and the uses thereof for degrading polyester containing material, such as plastic products. The esterases of the invention are particularly suited to degrade polyethylene terephthalate, and material containing polyethylene terephthalate.
    Type: Grant
    Filed: July 26, 2019
    Date of Patent: December 26, 2023
    Assignee: CARBIOS
    Inventors: Sophie Duquesne, Vincent Tournier, Alain Marty
  • Publication number: 20230212537
    Abstract: The present invention relates to esterases, more particularly to esterase variants having improved activity and/or improved thermostability compared to the esterase of SEQ ID NO: 1 and the uses thereof for degrading polyester containing material, such as plastic products. The esterases of the invention are particularly suited to degrade polyethylene terephthalate, and material containing polyethylene terephthalate.
    Type: Application
    Filed: December 22, 2022
    Publication date: July 6, 2023
    Inventors: BENOÎT DAVID, ISABELLE ANDRE, MAHER BEN KHALED, SOPHIE DUQUESNE, ALAIN MARTY
  • Patent number: 11692181
    Abstract: The present invention relates to novel esterases, more particularly to esterase variants having improved activity and/or improved thermostability compared to the esterase of SEQ ID NO: 1 and the uses thereof for degrading polyester containing material, such as plastic products. The esterases of the invention are particularly suited to degrade polyethylene terephthalate, and material containing polyethylene terephthalate.
    Type: Grant
    Filed: July 26, 2019
    Date of Patent: July 4, 2023
    Assignee: CARBIOS
    Inventors: Isabelle Andre, Vincent Tournier, Alexandre Gilles, Sophie Duquesne
  • Publication number: 20230135014
    Abstract: The present invention relates to novel esterase, more particularly to esterase variants having improved thermostability compared to the esterase of SEQ ID No 1 and the uses thereof for degrading polyester containing material, such as plastic products. The esterases of the invention are particularly suited to degrade polyethylene terephthalate, and material containing polyethylene terephthalate.
    Type: Application
    Filed: August 15, 2022
    Publication date: May 4, 2023
    Inventors: CHRISTOPHER TOPHAM, HÉLÈNE TEXIER, VINCENT TOURNIER, MARIE-LAURE DESROUSSEAUX, SOPHIE DUQUESNE, ISABELLE ANDRE, SOPHIE BARBE, ALAIN MARTY
  • Patent number: 11549105
    Abstract: The present invention relates to novel proteases, more particularly to protease variants having improved activity compared to the protease of SEQ ID NO: 1 and the uses thereof for degrading polyester containing material, such as plastic products. The proteases of the invention are particularly suited to degrade polylactic acid, and material containing polylactic acid.
    Type: Grant
    Filed: December 21, 2018
    Date of Patent: January 10, 2023
    Assignee: CARBIOS
    Inventors: Alain Marty, Sophie Duquesne, Marie Guicherd, Marc Gueroult, Isabelle Andre
  • Patent number: 11535832
    Abstract: The present invention relates to esterases, more particularly to esterase variants having improved activity and/or improved themostability compared to the esterase of SEQ ID NO:1 and the uses thereof for degrading polyester containing material, such as plastic products. The esterases of the invention are particularly suited to degrade polyethylene terephthalate, and material containing polyethylene terephthalate.
    Type: Grant
    Filed: July 26, 2019
    Date of Patent: December 27, 2022
    Assignee: CARBIOS
    Inventors: Benoît David, Isabelle Andre, Maher Ben Khaled, Sophie Duquesne, Alain Marty
  • Publication number: 20220282235
    Abstract: The present invention relates to novel proteases, more particularly to protease variants having improved thermostability compared to the protease of SEQ ID NO:1 and the uses thereof for degrading polyester containing material, such as plastic products. The proteases of the invention are particularly suited to degrade polylactic acid, and material containing polylactic acid.
    Type: Application
    Filed: May 16, 2022
    Publication date: September 8, 2022
    Inventors: SOPHIE DUQUESNE, SABINE GAVALDA, MAHER BEN KHALED
  • Patent number: 11414651
    Abstract: The present invention relates to novel esterase, more particularly to esterase variants having improved thermostability compared to the esterase of SEQ ID No 1 and the uses thereof for degrading polyester containing material, such as plastic products. The esterases of the invention are particularly suited to degrade polyethylene terephthalate, and material containing polyethylene terephthalate.
    Type: Grant
    Filed: March 9, 2020
    Date of Patent: August 16, 2022
    Assignee: CARBIOS
    Inventors: Christopher Topham, Hélène Texier, Vincent Tournier, Marie-Laure Desrousseaux, Sophie Duquesne, Isabelle Andre, Sophie Barbe, Alain Marty
  • Patent number: 11377533
    Abstract: The present invention relates to processes for degrading plastic products and the uses thereof. The processes of the invention particularly comprise a step of amorphizing a plastic product prior to a step of depolymerization. The processes of the invention are particularly useful for degrading a plastic product comprising polyethylene terephthalate and/or polylactic acid. The invention also relates to a method of producing monomers and/or oligomers from a plastic product comprising at least one polyester, particularly polyethylene terephthalate and/or polylactic acid, comprising submitting the plastic product both to an amorphization step and to a depolymerization step.
    Type: Grant
    Filed: September 1, 2020
    Date of Patent: July 5, 2022
    Assignee: CARBIOS
    Inventors: Marie-Laure Desrousseaux, Helene Texier, Sophie Duquesne, Alain Marty, Mediha Aloui Dalibey, Michel Chateau
  • Patent number: 11345906
    Abstract: The present invention relates to novel proteases, more particularly to protease variants having improved activity compared to the protease of SEQ ID N° 1 and the uses thereof for degrading polyester containing material, such as plastic products. The proteases of the invention are particularly suited to degrade polylactic acid, and material containing polylactic acid.
    Type: Grant
    Filed: September 30, 2020
    Date of Patent: May 31, 2022
    Assignee: CARBIOS
    Inventors: Alain Marty, Sophie Duquesne, Marie Guicherd, Marlene Vuillemin, Maher Ben Khaled
  • Publication number: 20210261931
    Abstract: The present invention relates to novel esterase, more particularly to esterase variants having improved thermostability compared to the esterase of SEQ ID No 1 and the uses thereof for degrading polyester containing material, such as plastic products. The esterases of the invention are particularly suited to degrade polyethylene terephthalate, and material containing polyethylene terephthalate.
    Type: Application
    Filed: March 9, 2020
    Publication date: August 26, 2021
    Inventors: CHRISTOPHER TOPHAM, HÉLÈNE TEXIER, VINCENT TOURNIER, MARIE-LAURE DESROUSSEAUX, SOPHIE DUQUESNE, ISABELLE ANDRE, SOPHIE BARBE, ALAIN MARTY
  • Patent number: 11072784
    Abstract: The present invention relates to novel esterase, more particularly to esterase variants having improved activity compared to the esterase of SEQ ID No 1 and the uses thereof for degrading polyester containing material, such as plastic products. The esterases of the invention are particularly suited to degrade polyethylene terephthalate, and material containing polyethylene terephthalate.
    Type: Grant
    Filed: March 16, 2020
    Date of Patent: July 27, 2021
    Assignee: CARBIOS
    Inventors: Vincent Tournier, Hélène Texier, Marie-Laure Desrousseaux, Christopher Topham, Isabelle Andre, Sophie Barbe, Sophie Duquesne, Alain Marty
  • Publication number: 20210180037
    Abstract: The present invention relates to novel esterases, more particularly to esterase variants having improved activity and/or improved themostability compared to the esterase of SEQ ID NO:1 and the uses thereof for degrading polyester containing material, such as plastic products. The esterases of the invention are particularly suited to degrade polyethylene terephthalate, and material containing polyethylene terephthalate.
    Type: Application
    Filed: July 26, 2019
    Publication date: June 17, 2021
    Inventors: SOPHIE DUQUESNE, VINCENT TOURNIER, ALAIN MARTY
  • Publication number: 20210171921
    Abstract: The present invention relates to novel esterases, more particularly to esterase variants having improved activity and/or improved thermostability compared to the esterase of SEQ ID NO:1 and the uses thereof for degrading polyester containing material, such as plastic products. The esterases of the invention are particularly suited to degrade polyethylene terephthalate, and material containing polyethylene terephthalate.
    Type: Application
    Filed: July 26, 2019
    Publication date: June 10, 2021
    Inventors: ISABELLE ANDRE, VINCENT TOURNIER, ALEXANDRE GILLES, SOPHIE DUQUESNE
  • Publication number: 20210163906
    Abstract: The present invention relates to novel esterases, more particularly to esterase variants having improved activity and/or improved thermostability compared to the esterase of SEQ ID NO:1 and the uses thereof for degrading polyester containing material, such as plastic products. The esterases of the invention are particularly suited to degrade polyethylene terephthalate, and material containing polyethylene terephthalate.
    Type: Application
    Filed: July 26, 2019
    Publication date: June 3, 2021
    Inventors: BENOÎT DAVID, ISABELLE ANDRE, MAHER BEN KHALED, SOPHIE DUQUESNE, ALAIN MARTY
  • Publication number: 20210009980
    Abstract: The present invention relates to novel proteases, more particularly to protease variants having improved activity compared to the protease of SEQ ID N° 1 and the uses thereof for degrading polyester containing material, such as plastic products. The proteases of the invention are particularly suited to degrade polylactic acid, and material containing polylactic acid.
    Type: Application
    Filed: September 30, 2020
    Publication date: January 14, 2021
    Inventors: ALAIN MARTY, SOPHIE DUQUESNE, MARIE GUICHERD, MARLENE VUILLEMIN, MAHER BEN KHALED
  • Publication number: 20200392303
    Abstract: The present invention relates to processes for degrading plastic products and the uses thereof. The processes of the invention particularly comprise a step of amorphizing a plastic product prior to a step of depolymerization. The processes of the invention are particularly useful for degrading a plastic product comprising polyethylene terephthalate and/or polylactic acid. The invention also relates to a method of producing monomers and/or oligomers from a plastic product comprising at least one polyester, particularly polyethylene terephthalate and/or polylactic acid, comprising submitting the plastic product both to an amorphization step and to a depolymerization step.
    Type: Application
    Filed: September 1, 2020
    Publication date: December 17, 2020
    Inventors: MARIE-LAURE DESROUSSEAUX, HELENE TEXIER, SOPHIE DUQUESNE, ALAIN MARTY, MEDIHA ALOUI DALIBEY, MICHEL CHATEAU
  • Publication number: 20200385698
    Abstract: The present invention relates to novel proteases, more particularly to protease variants having improved activity compared to the protease of SEQ ID NO: 1 and the uses thereof for degrading polyester containing material, such as plastic products. The proteases of the invention are particularly suited to degrade polylactic acid, and material containing polylactic acid.
    Type: Application
    Filed: December 21, 2018
    Publication date: December 10, 2020
    Inventors: ALAIN MARTY, SOPHIE DUQUESNE, MARIE GUICHERD, MARC GUEROULT, ISABELLE ANDRE