Patents by Inventor Laurence Rolland

Laurence Rolland 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 for diagnosing the operation of a water purification installation of the filter medium device type, and a diagnostic tool suitable for said method
    Patent number: 8590711
    Abstract: The invention relates to a method of diagnosing the operation of a water purification installation of the filter medium device type, the material of the filter medium being made up of particles, the method including the following steps: a characterization step of characterizing at least one physical and/or mechanical parameter of the filter medium device to establish a permeability value Ks (expressed in m/s); a comparison step of comparing said established permeability value Ks with a predetermined range [kmin; kmax] of permeability values representing a satisfactory operating state of the purification installation; and a diagnosis step during which the filter medium device is assigned an operation indicator according to the result of the comparison step. Applications include non-collective sanitation (NCS) systems and stand-alone sanitation systems.
    Type: Grant
    Filed: January 18, 2010
    Date of Patent: November 26, 2013
    Assignees: Veolia Eau-Compagnie Generale des Eaux, Centre National du Machinisme Agricole, du Genie Rural, des Eaux et des Forets (CEMAGREF), Universite Blaise Pascal—Clermont II
    Inventors: Christian Vignoles, Pascal Molle, Alain Lienard, Laurence Rolland, Pierre Breul, Fathe Bouteldja, Daniel Boissier
  • METHOD FOR DIAGNOSING THE OPERATION OF A WATER PURIFICATION INSTALLATION OF THE FILTER MEDIUM DEVICE TYPE, AND A DIAGNOSTIC TOOL SUITABLE FOR SAID METHOD
    Publication number: 20120031194
    Abstract: The invention relates to a method of diagnosing the operation of a water purification installation of the filter medium device type, the material of the filter medium being made up of particles, the method including the following steps: a characterization step of characterizing at least one physical and/or mechanical parameter of the filter medium device to establish a permeability value Ks (expressed in m/s); a comparison step of comparing said established permeability value Ks with a predetermined range [kmin; kmax] of permeability values representing a satisfactory operating state of the purification installation; and a diagnosis step during which the filter medium device is assigned an operation indicator according to the result of the comparison step. Applications include non-collective sanitation (NCS) systems and stand-alone sanitation systems.
    Type: Application
    Filed: January 18, 2010
    Publication date: February 9, 2012
    Applicants: UNIVERSITE BLAISE PASCAL- CLERMONT II, VEOLIA EAU
    Inventors: Christian Vignoles, Pascal Molle, Alain Lienard, Laurence Rolland, Pierre Breul, Fathe Bouteldja, Daniel Boissier
  • Compositions based on chlorofluorinated ether and solvent and their application in absorption apparatus
    Patent number: 4990277
    Abstract: The invention relates to compositions which contain a chlorofluorinated ether and at least one solvent, and their use in thermal absorption apparatus for the generation of heat or cold.In the compositions according to the invention, the chlorofluorinated ether is 1-difluoromethoxy-1,1,2-trifluoro-2-chloroethane (enflurane: CF.sub.2 H-O-CF.sub.2 CHFCl) and the solvent is selected among aromatic esters and .omega.,.omega.'-dialkylated polyoxyethylene glycols.The present invention can be particularly applied in the heating and refrigeration areas using absorption systems such as, for example, heat pumps.
    Type: Grant
    Filed: October 28, 1988
    Date of Patent: February 5, 1991
    Assignees: Atochem, Gaz de France, Institut Francais du Petrol
    Inventors: Laurence Rolland, Rene Bertocchio, Jacques Cheron
  • Compositions based on chlorofluorinated ether and solvent and their application in absorption apparatus
    Patent number: 4985169
    Abstract: The invention relates to compositions which contain a chlorofluorinated ether and at least one solvent, and their use in thermal absorption apparatus for the generation of heat or cold.In the compositions according to the invention, the chlorofluorinated ether is 1-difluoromethoxy-1,1,2-trifluoro-2-chloroethane (enflurane: CF.sub.2 H--O--CF.sub.2 CHFCl) and the solvent is selected among aromatic esters and .omega.,.omega.'-dialkylated polyoxyethylene glycols.The present invention can be particularly applied in the heating and refrigeration areas using absorption systems such as, for example, heat pumps.
    Type: Grant
    Filed: April 6, 1990
    Date of Patent: January 15, 1991
    Assignees: Atochem, Gas de France, Institut Francais du Petrole
    Inventors: Laurence Rolland, Rene Bertoochio, Jacques Cheron