Patents by Inventor Bruno GRIGNARD

Bruno GRIGNARD 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).

  • Self-blowing isocyanate-free polyurethane foams
    Patent number: 12503552
    Abstract: The present invention relates to a curable isocyanate-free formulation for preparing a polyurethane self-blowing foam comprising at least one multifunctional cyclic carbonate having at least two cyclic carbonate groups at the end of the chain (compound A), at least one multifunctional amine (compound B), at least one multifunctional thiol (compound C) and at least one catalyst (compound D), to a process for preparing said foams, to the thus obtained foams and the recycling of said foams.
    Type: Grant
    Filed: January 3, 2022
    Date of Patent: December 23, 2025
    Assignee: Universite de Liege
    Inventors: Christophe Detrembleur, Jean-Michel Thomassin, Bruno Grignard, Florent Monie, Christine Jerome
  • Self-blowing isocyanate-free polyurethane foams
    Publication number: 20240043647
    Abstract: The present invention relates to a curable isocyanate-free formulation for preparing a polyurethane self-blowing foam comprising at least one multifunctional cyclic carbonate having at least two cyclic carbonate groups at the end of the chain (compound A), at least one multifunctional amine (compound B), water or/and a water source and optionally at least one catalyst (compound D), to a process for preparing said foams and to the thus obtained foams, to a process for recycling the obtained foams and to the thus recycled foams.
    Type: Application
    Filed: August 31, 2023
    Publication date: February 8, 2024
    Applicant: Université de Liège
    Inventors: Christophe DETREMBLEUR, Bruno GRIGNARD, Maxime BOURGUIGNON
  • SELF-BLOWING ISOCYANATE-FREE POLYURETHANE FOAMS
    Publication number: 20230416487
    Abstract: The present invention relates to a curable isocyanate-free formulation for preparing a polyurethane self-blowing foam comprising at least one multifunctional cyclic carbonate having at least two cyclic carbonate groups at the end of the chain (compound A), at least one multifunctional amine (compound B), at least one masked thiol precursor (compound C) and optionally at least one catalyst (compound D), to a process for preparing said foams, to the thus obtained foams and to the recycling of said foams.
    Type: Application
    Filed: December 10, 2021
    Publication date: December 28, 2023
    Applicant: Université de Liège
    Inventors: Christophe DETREMBLEUR, Bruno GRIGNARD, Florent MONIE
  • SELF-BLOWING ISOCYANATE-FREE POLYURETHANE FOAMS
    Publication number: 20220195117
    Abstract: The present invention relates to a curable isocyanate-free formulation for preparing a polyurethane self-blowing foam comprising at least one multifunctional cyclic carbonate having at least two cyclic carbonate groups at the end of the chain (compound A), at least one multifunctional amine (compound B), at least one multifunctional thiol (compound C) and at least one catalyst (compound D), to a process for preparing said foams, to the thus obtained foams and the recycling of said foams.
    Type: Application
    Filed: January 3, 2022
    Publication date: June 23, 2022
    Applicant: Universite de Liege
    Inventors: Christophe Detrembleur, Jean-Michel THOMASSIN, Bruno GRIGNARD, Florent MONIE, Christine JEROME