Patents by Inventor Delphine Herbert-Guillou

Delphine Herbert-Guillou 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).

  • Method and device for detecting a biofilm
    Patent number: 6856937
    Abstract: A method for determining the thickness of a biofilm which is developed on a support which is immersed in an aqueous medium in which a biofilm develops, characterized in that it consists in the following: a) the medium is continuously circulated in an electrochemical cell comprising a reference electrode, an auxiliary electrode and at least one working electrode, b) circulation of said medium is interrupted and the cell is isolated; c) an electrochemical tracer is introduced into the medium present in the cell; d) the medium/tracer solution is circulated in the cell in order to direct a jet of said solution, perpendicular to the working electrode; e) the value of the tracer reduction limiting current is measured and recorded according to the hydrodynamic conditions on the surface of the working electrode; and f) the thickness of the porous layer of biofilm on the surface of the electrode is calculated according to the Koutecky-Levich relation, based on analysis of the transport of material through the porous l
    Type: Grant
    Filed: January 9, 2001
    Date of Patent: February 15, 2005
    Assignee: Ondeo Services
    Inventors: Delphine Herbert-Guillou, Dominique Festy, Bernard Tribollet, Laurent Kiene
  • Method and device for detecting a biofilm
    Publication number: 20030132144
    Abstract: A method for determining the thickness of a biofilm which is developed on a support which is immersed in an aqueous medium in which a biofilm develops, characterized in that it consists in the following: a) the medium is continuously circulated in an electrochemical cell comprising a reference electrode, an auxiliary electrode and at least one working electrode, b) circulation of said medium is interrupted and the cell is isolated; c) an electrochemical tracer is introduced into the medium present in the cell; d) the medium/tracer solution is circulated in the cell in order to direct a jet of said solution, perpendicular to the working electrode; e) the value of the tracer reduction limiting current is measured and recorded according to the hydrodynamic conditions on the surface of the working electrode; and f) the thickness of the porous layer of biofilm on the surface of the electrode is calculated according to the Koutecky-Levich relation, based on analysis of the transport of material through the porous l
    Type: Application
    Filed: September 6, 2002
    Publication date: July 17, 2003
    Inventors: Delphine Herbert-Guillou, Dominique Festy, Bernard Tribollet, Laurent Kiene