Patents by Inventor Pierre Schaaf

Pierre Schaaf 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: 11879038
    Abstract: The present invention relates to a polymer foam, said polymer foam comprising pores forming an open-cell polymer foam, said polymer foam comprising a supramolecular gel inside pores, and said polymer foam comprising at least one enzyme. The present invention relates to a supramolecular gel; its preparation and its applications, notably in chemical synthesis and kinetic resolution, in particular of organic compounds. The present invention also relates to flow chemistry.
    Type: Grant
    Filed: September 9, 2020
    Date of Patent: January 23, 2024
    Assignees: UNIVERSITE DE STRASBOURG, CENTRE NATIONAL DE LA RECHERCHE SCIENTIFIQUE (CNRS), INSTITUT NATIONAL DE LA SANTE ET DE LA RECHERCHE MEDICALE
    Inventors: Loïc Jierry, Christophe Serra, Pierre Schaaf, Jennifer Rodon Fores, Fouzia Boulmedais
  • Patent number: 11602578
    Abstract: The present invention concerns a polyelectrolyte coating comprising at least one polycationic layer consisting of at least one polycation consisting of n repetitive units having the formula (1) and at least one polyanionic layer consisting of hyaluronic acid. The polyelectrolyte coating has a biocidal activity and the invention thus further refers to the use of said polyelectrolyte coating for producing a device, in particular a bacteriostatic medical device, more particularly an implantable device, comprising said polyelectrolyte coating, and a method for preparing said device and a kit.
    Type: Grant
    Filed: November 2, 2018
    Date of Patent: March 14, 2023
    Assignees: Université de Strasbourg, Institut National De La Sante Et De La Recherche Medicale (INSERM), Protip Medical
    Inventors: Philippe Lavalle, Pierre Schaaf, Nihal Engin Vrana, Angela Mutschler, Cynthia Calligaro, Lorène Tallet
  • Publication number: 20220389083
    Abstract: The present invention relates to a process of preparation of a biomaterial comprising the steps of: a) Preparing a solution comprising at least one protein having a solubility in water superior or equal to about 10 mg/mL and at least one salt having solubility in water superior or equal to about 500 mg/mL, b) Evaporating the solution obtained in step a) as is, as a foam obtained by foaming the solution obtained in step a), or as a mixture thereof, at a temperature comprised of from 4 to 50° C. in atmospheric pressure or at lower temperatures under vacuum or at a pressure lower than atmospheric pressure, until the formation of two non-miscible phases or until obtaining a substantially dry solid, thereby obtaining a biomaterial. The present invention also relates to a biomaterial obtainable by the process, and to the use of the biomaterial as a support for in vitro tissue engineering and/or for in vitro cell culture and in vitro expansion and/or as an implantable medical device, or as a drug.
    Type: Application
    Filed: October 23, 2020
    Publication date: December 8, 2022
    Inventors: Eya ALOUI, Marcella DE GIORGI, Benoît FRISCH, Philippe LAVALLE, Pierre SCHAAF
  • Patent number: 11471558
    Abstract: The present invention concerns a polyelectrolyte coating comprising at least one polycationic layer consisting of at least one polycation consisting of n repetitive units having the formula (1) and at least one polyanionic layer consisting of hyaluronic acid. The polyelectrolyte coating has a biocidal activity and the invention thus further refers to the use of said polyelectrolyte coating for producing a device, in particular a bacteriostatic medical device, more particularly an implantable device, comprising said polyelectrolyte coating, and a method for preparing said device and a kit.
    Type: Grant
    Filed: May 2, 2017
    Date of Patent: October 18, 2022
    Assignees: INSTITUT NATIONAL DE LA SANTE ET DE LA RECHERCHE MEDICALE (INSERM), UNIVERSITÉ DE STRASBOURG, PROTIP MEDICAL
    Inventors: Philippe Lavalle, Pierre Schaaf, Nihal Engin Vrana, Angela Mutschler
  • Publication number: 20220315710
    Abstract: The present invention relates to a polymer foam, said polymer foam comprising pores forming an open-cell polymer foam, said polymer foam comprising a supramolecular gel inside pores, and said polymer foam comprising at least one enzyme. The present invention relates to a supramolecular gel; its preparation and its applications, notably in chemical synthesis and kinetic resolution, in particular of organic compounds. The present invention also relates to flow chemistry.
    Type: Application
    Filed: September 9, 2020
    Publication date: October 6, 2022
    Inventors: Loïc JIERRY, Christophe SERRA, Pierre SCHAAF, Jennifer RODON FORES, Fouzia BOULMEDAIS
  • Publication number: 20210010050
    Abstract: Disclosed is a liquid composition including a protein, a polyphenol and a morphogen; to a solid composition including the cross-linked product of a protein and a polyphenol; to a biosensor and a biofuel cell including the solid composition bound to a surface of an electrochemical probe; to a process for the detection of an analyte with the biosensor; and to the use of a ferrocene as a morphogen in an electrodeposition process.
    Type: Application
    Filed: March 22, 2019
    Publication date: January 14, 2021
    Inventors: Fouzia BOULMEDAIS, Pierre SCHAAF, Loïc JIERRY, Janwa EL MAISS, Paolo LUPATTELLI, Marco CUCCARESE
  • Patent number: 10864296
    Abstract: A polyelectrolyte coating comprises at least one polycationic layer consisting of at least one polyarginine as herein defined and at least one polyanionic layer consisting of hyaluronic acid. The polyelectrolyte coating has a biocidal activity and the invention thus further refers to the use of said polyelectrolyte coating for producing a device, in particular a bacteriostatic medical device, more particularly an implantable device, comprising said polyelectrolyte coating, and a method for preparing said device and a kit. Also disclosed is a method of preventing a bacterial infection in an individual.
    Type: Grant
    Filed: July 11, 2017
    Date of Patent: December 15, 2020
    Assignees: INSTITUT NATIONAL DE LA SANTE ET DE LA RECHERCHE MEDICALE (INSERM), UNIVERSITÉ DE STRASBOURG, PROTIP MEDICAL
    Inventors: Philippe Lavalle, Pierre Schaaf, Nihal Engin Vrana, Angela Mutschler
  • Publication number: 20200289706
    Abstract: The present invention concerns a polyelectrolyte coating comprising at least one polycationic layer consisting of at least one polycation consisting of n repetitive units having the formula (1) and at least one polyanionic layer consisting of hyaluronic acid. The polyelectrolyte coating has a biocidal activity and the invention thus further refers to the use of said polyelectrolyte coating for producing a device, in particular a bacteriostatic medical device, more particularly an implantable device, comprising said polyelectrolyte coating, and a method for preparing said device and a kit.
    Type: Application
    Filed: November 2, 2018
    Publication date: September 17, 2020
    Inventors: Philippe LAVALLE, Pierre SCHAAF, Nihal Engin VRANA, Angela MUTSCHLER, Cynthia CALLIGARO, Lorène TALLET
  • Publication number: 20190375791
    Abstract: The present invention relates to a cateslytin peptide having an amino acid sequence consisting or consisting essentially of the sequence of SEQ ID NO: 1, wherein at least 80%, preferably at least 90%, of the amino acids residues of said cateslytin are D-configured. The invention also relates to the use of said cateslytin peptide as a drug, especially in the treatment of an infection in a patient in needs thereof.
    Type: Application
    Filed: November 22, 2017
    Publication date: December 12, 2019
    Inventors: Céline MARBAN, Marie-Hélène METZ-BOUTIGUE, Philippe LAVALLE, Pierre SCHAAF, Youssef HAIKEL
  • Publication number: 20190117832
    Abstract: The present invention concerns a polyelectrolyte coating comprising at least one polycationic layer consisting of at least one polycation consisting of n repetitive units having the formula (1) and at least one polyanionic layer consisting of hyaluronic acid. The polyelectrolyte coating has a biocidal activity and the invention thus further refers to the use of said polyelectrolyte coating for producing a device, in particular a bacteriostatic medical device, more particularly an implantable device, comprising said polyelectrolyte coating, and a method for preparing said device and a kit.
    Type: Application
    Filed: May 2, 2017
    Publication date: April 25, 2019
    Inventors: Philippe LAVALLE, Pierre SCHAAF, Nihal Engin VRANA, Angela MUTSCHLER
  • Publication number: 20180353333
    Abstract: The present invention relates to a nanofilm including at least one polycation and one polysulfated oligosaccharide. The present invention also relates to the nanofilms obtainable by simultaneously or alternately sputtering at least one polycation solution and at least one polysulfated oligosaccharide solution and to the use of said nanofilms on skin, skin conditions, wounds, or mucous membranes. The present invention also relates to a nanofilm for the use thereof in a method for releasing polysulfated oligosaccharide upon contact with exuding wounds.
    Type: Application
    Filed: December 2, 2016
    Publication date: December 13, 2018
    Applicants: Urgo Recherche Innovation et Developpement, Centre National de la Recherche Scientifique -CNRS -
    Inventors: Fouzia Boulmedais, Pierre Schaaf, Jean-Marc Pernot, Christelle Laurensou
  • Publication number: 20180318472
    Abstract: A polyelectrolyte coating comprises at least one polycationic layer consisting of at least one polyarginine as herein defined and at least one polyanionic layer consisting of hyaluronic acid. The polyelectrolyte coating has a biocidal activity and the invention thus further refers to the use of said polyelectrolyte coating for producing a device, in particular a bacteriostatic medical device, more particularly an implantable device, comprising said polyelectrolyte coating, and a method for preparing said device and a kit. Also disclosed is a method of preventing a bacterial infection in an individual.
    Type: Application
    Filed: July 11, 2017
    Publication date: November 8, 2018
    Inventors: Philippe LAVALLE, Pierre SCHAAF, Nihal Engin VRANA, Angela MUTSCHLER
  • Patent number: 9005694
    Abstract: The invention relates to a method for providing organic, semi-organic, mineral, inorganic and hybrid thin layers and thin layers containing nanoparticles, by simultaneous or alternate spraying of solutions of reactive partners (that is polymer/polymer interacting by hydrogen bonding, polyelectrolyte/small oligo-ion, inorganic compounds, etc.) on the surface of a solid substrate.
    Type: Grant
    Filed: May 20, 2011
    Date of Patent: April 14, 2015
    Assignees: Centre National de la Recherche Scientifique (CNRS), Universite de Strasbourg
    Inventors: Gabriela Popa, Gero Decher, Fouzia Boulmedais, Olivier Felix, Pierre Schaaf, Jean-Claude Voegel, Joseph Hemmerle, Peng Zhao
  • Publication number: 20140328883
    Abstract: The invention relates to methods for preparing crosslinked polyelectrolytes, in particular crosslinked polyelectrolytes multilayer films. The invention also relates to a method of coating a surface, and the obtained coated article.
    Type: Application
    Filed: December 30, 2013
    Publication date: November 6, 2014
    Inventors: Catherine Picart, Jean-Claude Voegel, Benoit Frisch, Pierre Schaaf, Gero Decher, Frederic Cuisinier
  • Publication number: 20130129907
    Abstract: The invention relates to a method for providing organic, semi-organic, mineral, inorganic and hybrid thin layers and thin layers containing nanoparticles, by simultaneous or alternate spraying of solutions of reactive partners (that is polymer/polymer interacting by hydrogen bonding, polyelectrolyte/small oligo-ion, inorganic compounds, etc.) on the surface of a solid substrate.
    Type: Application
    Filed: May 20, 2011
    Publication date: May 23, 2013
    Applicants: UNIVERSITE DE STRASBOURG, CENTRE NATIONAL DE LA RECHERCHE SCIENTIFIQUE (CNRS)
    Inventors: Gabriela Popa, Gero Decher, Fouzia Boulmedais, Olivier Felix, Pierre Schaaf, Jean-Claude Voegel, Joseph Hemmerle, Peng Zhao
  • Publication number: 20110151564
    Abstract: The invention relates to the use of a unit including a substrate and polyelectrolyte multilayer films deposited thereon in order to: carry out a method involving the proliferation of initial stem or differentiated cells that are brought into contact with the unit; and cover the unit with confluent viable adherent cells resulting from the proliferation of the initial cells, the cover being obtained at the end of a period of no more than one month, such as 14 days, 11 days or, in particular, 7 days, after the initial cells are brought into contact with the unit.
    Type: Application
    Filed: June 16, 2008
    Publication date: June 23, 2011
    Applicants: UNIVERSITE HENRI POINCARE NANCY 1, CHU DE NANCY-BRABOIS
    Inventors: Patrick Menu, Cedric Boura, Halima-Assia Kerdjoudj, Vanessa Moby, Nicolas Berthelemy, Jean-Claude Voegel, Pierre Schaaf, Jean-Francois Stoltz
  • Publication number: 20100143434
    Abstract: The invention concerns a mechanically responsive supported polyelectrolyte multilayer film, comprising:—an elastic substrate, on which are alternately coated:—at least one exponentially growing film; and—at least one mechanically responsive barrier film. It further concerns a process for its preparation and the use of such films notably for mechanically responsive mixing or delivery of active substances. It further concerns dosage forms of a drug, biosensors and implants comprising such films.
    Type: Application
    Filed: January 31, 2008
    Publication date: June 10, 2010
    Inventors: Pierre Schaaf, Jean-Claude Voegel
  • Publication number: 20080171070
    Abstract: The invention relates to polyelectrolyte multilayer films presenting a tunable biological activity and methods for preparing the same. The invention further relates to surfaces presenting such films and uses thereof, such as for the controlled delivery of biologically active agents.
    Type: Application
    Filed: January 31, 2006
    Publication date: July 17, 2008
    Inventors: Pierre Schaaf, Nadia Jessel, Joelle Ogier-Dirrig, Philippe Lavalle, Jean-Claude Voegel, Bernard Senger
  • Publication number: 20070129792
    Abstract: The invention relates to methods for preparing crosslinked polyelectrolytes, in particular crosslinked polyelectrolytes multilayer films. The invention also relates to a method of coating a surface, and the obtained coated article.
    Type: Application
    Filed: November 29, 2004
    Publication date: June 7, 2007
    Inventors: Catherine Picart, Jean-Claude Voegel, Benoit Frisch, Pierre Schaaf, Gero Decher, Frederic Cuisinier