Patents by Inventor Leonie Bouvier

Leonie Bouvier 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).

  • Filtering medium, method for making same
    Patent number: 7278542
    Abstract: The invention concerns a filtering medium based on a photocatalytic agent and activated carbon, characterized in that it comprises a permeable support covered with a first layer based on activated carbon, then a separate second layer based on a photocatalytic agent, or vice versa. The invention also concerns a method for making such a filtering medium.
    Type: Grant
    Filed: February 12, 2003
    Date of Patent: October 9, 2007
    Assignee: Ahlstrom Research and Services
    Inventors: Joseph Dussaud, Leonie Bouvier, Fabien Chevalier
  • Photocatalytic composition
    Patent number: 6906001
    Abstract: A photocatalytic composition includes at least a photocatalyst agent and at least an inorganic binding agent, characterized in that the inorganic binding agent includes an aqueous colloidal silica dioxide (SiO2) dispersion, the aqueous colloidal silica dioxide dispersion including particles capable of being bound to one another after coating the photocatalyst agent.
    Type: Grant
    Filed: March 31, 1999
    Date of Patent: June 14, 2005
    Assignee: Ahlstrom Research and Services
    Inventors: Pascale Escaffre, Pierre Girard, Joseph Dussaud, Léonie Bouvier
  • Photocatalytic composition
    Patent number: 6878191
    Abstract: A photocatalytic composition includes at least a photocatalyst agent and at least an inorganic binding agent, characterized in that the inorganic binding agent includes an aqueous colloidal silica dioxide (SiO2) dispersion, the aqueous colloidal silica dioxide dispersion including particles capable of being bound to one another after coating the photocatalyst agent.
    Type: Grant
    Filed: May 3, 2004
    Date of Patent: April 12, 2005
    Assignee: Ahlstrom Research and Services
    Inventors: Pascale Escaffre, Pierre Girard, Joseph Dussaud, Léonie Bouvier
  • Accelerated mulching paper degradation process and mulching paper for implementing the process
    Patent number: 6840006
    Abstract: Accelerated degradation of mulching paper, formed from cellulose fibers impregnated with a hydrophobic resin to provide weather resistance, comprises spraying the paper with an enzyme solution which degrades both the resin and the cellulose.
    Type: Grant
    Filed: April 30, 2003
    Date of Patent: January 11, 2005
    Assignee: Ahlstrom Research & Services
    Inventors: Joseph Dussaud, Léonie Bouvier
  • Photocatalytic composition
    Publication number: 20040204314
    Abstract: A photocatalytic composition includes at least a photocatalyst agent and at least an inorganic binding agent, characterized in that the inorganic binding agent includes an aqueous colloidal silica dioxide (SiO2) dispersion, the aqueous colloidal silica dioxide dispersion including particles capable of being bound to one another after coating the photocatalyst agent.
    Type: Application
    Filed: May 3, 2004
    Publication date: October 14, 2004
    Applicant: Ahlstrom Research and Services
    Inventors: Pascale Escaffre, Pierre Girard, Joseph Dussaud, Leonie Bouvier
  • Accelerated mulching paper degradation process and mulching paper for implementing the process
    Publication number: 20030192236
    Abstract: Accelerated degradation of mulching paper, formed from cellulose fibers impregnated with a hydrophobic resin to provide weather resistance, comprises spraying the paper with an enzyme solution which degrades both the resin and the cellulose.
    Type: Application
    Filed: April 30, 2003
    Publication date: October 16, 2003
    Applicants: Ahlstrom Paper Group Research, Competence Center
    Inventors: Joseph Dussaud, Leonie Bouvier
  • Filtering medium, method for making same
    Publication number: 20030150820
    Abstract: The invention concerns a filtering medium based on a photocatalytic agent and activated carbon, characterized in that it comprises a permeable support covered with a first layer based on activated carbon, then a separate second layer based on a photocatalytic agent, or vice versa. The invention also concerns a method for making such a filtering medium.
    Type: Application
    Filed: February 12, 2003
    Publication date: August 14, 2003
    Applicant: AHLSTROM RESEARCH AND SERVICES
    Inventors: Joseph Dussaud, Leonie Bouvier, Fabien Chevalier
  • Accelerated mulching paper degradation process and mulching paper for implementing the process
    Patent number: 6578315
    Abstract: Accelerated degradation of mulching paper, formed from cellulose fibers impregnated with a hydrophobic resin to provide weather resistance, comprises spraying the paper with an enzyme solution which degrades both the resin and the cellulose.
    Type: Grant
    Filed: October 5, 2000
    Date of Patent: June 17, 2003
    Assignee: Ahlstrom Paper Group Research & Competence Center
    Inventors: Joseph Dussaud, Léonie Bouvier
  • Method for purifying gaseous effluents by means of photocatalysis, installation for carrying out said method
    Patent number: 6503447
    Abstract: Process for the purification of gaseous effluents by a photocatalytic reaction, according to which, under ultraviolet radiation in a single stage, the gaseous effluent is subjected to movements by which at least one first substrate is lapped and by which a second substrate is traversed, the said first substrate and the said second substrate being covered with at least one photocatalysing agent. Plant for the implementation of the process.
    Type: Grant
    Filed: January 5, 2001
    Date of Patent: January 7, 2003
    Assignee: Ahlstrom Paper Group Research and Competence Center
    Inventors: Pierre Mondjian, Christine Nguyen Dinh An, Françoise Delpech, Jean-Claude Roux, Sylvie Bourgeois, Alexis Steinbrunn, Pierre Pichat, Jean Disdier, Estelle Mietton-Ceulemans, Léonie Bouvier, Joseph Dussaud, Pierre Girard, Virginie Blondeau-Patissier