Patents by Inventor Geraldine Laffargue

Geraldine Laffargue 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: 9505890
    Abstract: Method for preparing a silica/natural rubber masterbatch, including: doping the silica with magnesium; preparing at least one dispersion of the resulting doped silica in water; bringing a natural rubber field latex into contact with the aqueous doped-silica dispersion and mixing them together so as to obtain a coagulum; recovering the coagulum; and drying the recovered coagulum so as to obtain the masterbatch.
    Type: Grant
    Filed: October 10, 2012
    Date of Patent: November 29, 2016
    Assignees: COMPAGNIE GENERALE DES ETABLISSEMENTS MICHELIN, MICHELIN RECHERCHE ET TECHNIQUE, S.A.
    Inventors: Benoit De Gaudemaris, Geraldine Laffargue, Julien Berriot
  • Patent number: 9290626
    Abstract: Preparation of a masterbatch of diene elastomer and silica including preparing at least one silica dispersion in water; bringing into contact and mixing an elastomer latex and the aqueous silica dispersion in the presence of a calcium salt in order to obtain a coagulum; and recovering the coagulum and drying the recovered coagulum in order to obtain the masterbatch. The molar content of calcium cations, defined as the number of moles of calcium cations of the calcium salt per BET unit area of the silica, is between 1.19*10?6 and 2.81*10?6 mol/m2.
    Type: Grant
    Filed: October 10, 2012
    Date of Patent: March 22, 2016
    Assignees: COMPAGNIE GENERALE DES ETABLISSEMENTS, MICHELIN RECHERCHE ET TECHNIQUE S.A.
    Inventors: Benoit De Gaudemaris, Geraldine Laffargue, Julien Berriot
  • Patent number: 9290627
    Abstract: Preparation of a masterbatch of diene elastomer and silica including preparing at least one silica dispersion in water; bringing into contact and mixing an elastomer latex and the aqueous silica dispersion in the presence of a metal salt having an at least divalent metal element, in order to obtain a coagulum; and recovering the coagulum and drying same in order to obtain the masterbatch. The metal cation molar ration, defined as the number of moles of metal cations of the metal salt per BET unit area of the silica, is between 9.375*10?7 and 1.875*10?5 mol/m2.
    Type: Grant
    Filed: October 10, 2012
    Date of Patent: March 22, 2016
    Assignees: Compagnie Generale des Establissements Michelin, Michelin Recherche et Technique S.A.
    Inventors: Benoit De Gaudemaris, Geraldine Laffargue, Julien Berriot
  • Patent number: 9284420
    Abstract: Preparation of a masterbatch of diene elastomer and silica including preparing at least one silica dispersion in water; bringing into contact and mixing an elastomer latex and the aqueous silica dispersion in the presence of a metal salt in order to obtain a coagulum; and recovering the coagulum and drying the recovered coagulum in order to obtain the masterbatch. The molar content of zinc cations, defined as the number of moles of zinc cations of the zinc salt per BET unit area of the silica, is between 1.19*10?6 and 5.62*10?6 mol/m2.
    Type: Grant
    Filed: October 10, 2012
    Date of Patent: March 15, 2016
    Assignees: Compagnie Generale des Etablissements Michelin, Michelin Recherche et Technique S.A.
    Inventors: Benoit De Gaudemaris, Geraldine Laffargue, Julien Berriot
  • Patent number: 9175144
    Abstract: The invention relates to a method for preparing a silica/natural rubber masterbatch, comprising the following successive steps: doping the silica with an at least divalent metallic element; preparing at least one dispersion of the resulting doped silica in water; bringing a natural rubber field latex into contact with the aqueous doped-silica dispersion and mixing them together so as to obtain a coagulum; recovering the coagulum; and drying the recovered coagulum so as to obtain the masterbatch.
    Type: Grant
    Filed: October 25, 2010
    Date of Patent: November 3, 2015
    Assignees: COMPAGNIE GENERALE DES ETABLISSEMENTS MICHELIN, MICHELIN RECHERCHE ET TECHNIQUE S.A.
    Inventors: Julien Berriot, Benoit De Gaudemaris, Géraldine Laffargue
  • Patent number: 9115258
    Abstract: Preparation of a masterbatch of diene elastomer and silica including preparing at least one silica dispersion in water; bringing into contact and mixing an elastomer latex and the aqueous silica dispersion in the presence of a metal salt having an at least divalent metal element, in order to obtain a coagulum; and recovering the coagulum and drying same in order to obtain the masterbatch. The metal cation molar ration, defined as the number of moles of metal cations of the metal salt per BET unit area of the silica, is between 9.375*10?7 and 1.875*10?5 mol/m2.
    Type: Grant
    Filed: October 10, 2012
    Date of Patent: August 25, 2015
    Assignees: COMPAGNIE GENERAL DES ETABLISSEMENTS MICHELIN, MICHELIN RECHERCHE ET TECHNIQUE
    Inventors: Benoit De Gaudemaris, Geraldine Laffargue, Julien Berriot
  • Publication number: 20150038617
    Abstract: Preparation of a masterbatch of diene elastomer and silica including preparing at least one silica dispersion in water; bringing into contact and mixing an elastomer latex and the aqueous silica dispersion in the presence of a metal salt having an at least divalent metal element, in order to obtain a coagulum; and recovering the coagulum and drying same in order to obtain the masterbatch. The metal cation molar ration, defined as the number of moles of metal cations of the metal salt per BET unit area of the silica, is between 9.375*10?7 and 1.875*10?5 mol/m2.
    Type: Application
    Filed: October 10, 2012
    Publication date: February 5, 2015
    Inventors: Benoit DE Gaudemaris, Geraldine Laffargue, Julien Berriot
  • Publication number: 20140296378
    Abstract: Method for preparing a silica/natural rubber masterbatch, including: doping the silica with magnesium; preparing at least one dispersion of the resulting doped silica in water; bringing a natural rubber field latex into contact with the aqueous doped-silica dispersion and mixing them together so as to obtain a coagulum; recovering the coagulum; and drying the recovered coagulum so as to obtain the masterbatch.
    Type: Application
    Filed: October 10, 2012
    Publication date: October 2, 2014
    Inventors: Benoit De Gaudemaris, Geraldine Laffargue, Julien Berriot
  • Publication number: 20140256845
    Abstract: Method for preparing a silica/natural rubber masterbatch, including: doping the silica with magnesium; preparing at least one dispersion of the resulting doped silica in water; bringing a natural rubber field latex into contact with the aqueous doped-silica dispersion and mixing them together so as to obtain a coagulum; recovering the coagulum; and drying the recovered coagulum so as to obtain the masterbatch.
    Type: Application
    Filed: October 10, 2012
    Publication date: September 11, 2014
    Applicant: MICHELIN RECHERCHE ET TECHNIQUE, S.A.
    Inventors: Benoit De Gaudemaris, Geraldine Laffargue, Julien Berriot
  • Publication number: 20140249247
    Abstract: Preparation of a masterbatch of diene elastomer and silica including preparing at least one silica dispersion in water; bringing into contact and mixing an elastomer latex and the aqueous silica dispersion in the presence of a metal salt in order to obtain a coagulum; and recovering the coagulum and drying the recovered coagulum in order to obtain the masterbatch. The molar content of zinc cations, defined as the number of moles of zinc cations of the zinc salt per BET unit area of the silica, is between 1.19*10?6 and 5.62*10?6 mol/m2.
    Type: Application
    Filed: October 10, 2012
    Publication date: September 4, 2014
    Applicant: MICHELIN RECHERCHE ET TECHNIQUE, S.A.
    Inventors: Benoit De Gaudemaris, Geraldine Laffargue, Julien Berriot
  • Publication number: 20140249249
    Abstract: Preparation of a masterbatch of diene elastomer and silica including preparing at least one silica dispersion in water; bringing into contact and mixing an elastomer latex and the aqueous silica dispersion in the presence of a calcium salt in order to obtain a coagulum; and recovering the coagulum and drying the recovered coagulum in order to obtain the masterbatch. The molar content of calcium cations, defined as the number of moles of calcium cations of the calcium salt per BET unit area of the silica, is between 1.19*10?6 and 2.81*10?6 mol/m2.
    Type: Application
    Filed: October 10, 2012
    Publication date: September 4, 2014
    Inventors: Benoit De Gaudemaris, Geraldine Laffargue, Julien Berriot
  • Publication number: 20140249251
    Abstract: Preparation of a masterbatch of diene elastomer and silica including preparing at least one silica dispersion in water; bringing into contact and mixing an elastomer latex and the aqueous silica dispersion in the presence of a metal salt having an at least divalent metal element, in order to obtain a coagulum; and recovering the coagulum and drying same in order to obtain the masterbatch. The metal cation molar ration, defined as the number of moles of metal cations of the metal salt per BET unit area of the silica, is between 9.375*10?7 and 1.875*10?5 mol/m2.
    Type: Application
    Filed: October 10, 2012
    Publication date: September 4, 2014
    Applicants: COMPAGNIE GENERALE DES ETABLISSEMENTS MICHELIN, MICHELIN RECHERCHE ET TECHNIQUE, S.A.
    Inventors: Benoit De Gaudemaris, Geraldine Laffargue, Julien Berriot
  • Publication number: 20120264875
    Abstract: The invention relates to a method for preparing a silica/natural rubber masterbatch, comprising the following successive steps: doping the silica with an at least divalent metallic element; preparing at least one dispersion of the resulting doped silica in water; bringing a natural rubber field latex into contact with the aqueous doped-silica dispersion and mixing them together so as to obtain a coagulum; recovering the coagulum; and drying the recovered coagulum so as to obtain the masterbatch.
    Type: Application
    Filed: October 25, 2010
    Publication date: October 18, 2012
    Applicants: MICHELIN RECHERCHE ET TECHNIQUE S.A., COMPAGNIE GENERALE DES ETABLISSEMENTS MICHELIN
    Inventors: Julien Berriot, Benoit De Gaudemaris, Géraldine Laffargue
  • Publication number: 20120264849
    Abstract: The invention relates to a method for preparing a silica/diene elastomer masterbatch, comprising the following successive steps: doping the silica with an at least divalent metallic element; preparing at least one dispersion of the resulting doped silica in water; bringing a diene elastomer latex into contact with the aqueous doped-silica dispersion and mixing them together so as to obtain a coagulum; recovering the coagulum; and drying the recovered coagulum so as to obtain the masterbatch.
    Type: Application
    Filed: October 25, 2010
    Publication date: October 18, 2012
    Applicants: Michelin Recherche et Technique S. A., COMPAGNIE GENERALE DES ETABLISSEMENTS MICHELIN
    Inventors: Julien Berriot, Benoît De Gaudemaris, Géraldine Laffargue
  • Publication number: 20120259035
    Abstract: The invention relates to a method for preparing a silica/synthetic diene elastomer masterbatch, comprising the following successive steps: doping the silica with an at least divalent metallic element; preparing at least one dispersion of the resulting doped silica in water; bringing a synthetic diene elastomer latex into contact with the aqueous doped-silica dispersion and mixing them together so as to obtain a coagulum; recovering the coagulum; and drying the recovered coagulum so as to obtain the masterbatch.
    Type: Application
    Filed: October 25, 2010
    Publication date: October 11, 2012
    Applicants: MICHELIN RECHERCHE ET TECHNIQUE S.A., COMPAGNIE GENERALE DES ETABLISSEMENTS MICHELIN
    Inventors: Julien Berriot, Benoît De Gaudemaris, Géraldine Laffargue
  • Patent number: 7557151
    Abstract: Rubber composition, which can be used for the manufacture of tires, based on at least one diene elastomer, one reinforcing filler, one vulcanization system and, as antireversion agent, one itaconimidomaleimide compound of formula (R hydrocarbon radical): Use of such a composition for the manufacture of a finished article or of a semi-finished product made of rubber intended for a motor vehicle ground-contact system, in particular of a tire.
    Type: Grant
    Filed: March 15, 2006
    Date of Patent: July 7, 2009
    Assignee: Michelin Recherche et Technique S.A.
    Inventors: Laure Belin, Jose Carlos Araujo Da Silva, Sylvie Gandon-Pain, Geraldine Laffargue
  • Publication number: 20090036579
    Abstract: Rubber composition, which can be used for the manufacture of tyres, based on at least one diene elastomer, one reinforcing filler, one vulcanization system and, as antireversion agent, one itaconimidomaleimide compound of formula (R hydrocarbon radical): Use of such a composition for the manufacture of a finished article or of a semi-finished product made of rubber intended for a motor vehicle ground-contact system, in particular of a tyre.
    Type: Application
    Filed: March 15, 2006
    Publication date: February 5, 2009
    Inventors: Laure Belin, Jose Carlos Araujo Da Silva, Sylvie Gandon-Pain, Geraldine Laffargue