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).
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Patent number: 9505890Abstract: 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: GrantFiled: October 10, 2012Date of Patent: November 29, 2016Assignees: COMPAGNIE GENERALE DES ETABLISSEMENTS MICHELIN, MICHELIN RECHERCHE ET TECHNIQUE, S.A.Inventors: Benoit De Gaudemaris, Geraldine Laffargue, Julien Berriot
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Patent number: 9290626Abstract: 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: GrantFiled: October 10, 2012Date of Patent: March 22, 2016Assignees: COMPAGNIE GENERALE DES ETABLISSEMENTS, MICHELIN RECHERCHE ET TECHNIQUE S.A.Inventors: Benoit De Gaudemaris, Geraldine Laffargue, Julien Berriot
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Patent number: 9290627Abstract: 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: GrantFiled: October 10, 2012Date of Patent: March 22, 2016Assignees: Compagnie Generale des Establissements Michelin, Michelin Recherche et Technique S.A.Inventors: Benoit De Gaudemaris, Geraldine Laffargue, Julien Berriot
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Patent number: 9284420Abstract: 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: GrantFiled: October 10, 2012Date of Patent: March 15, 2016Assignees: Compagnie Generale des Etablissements Michelin, Michelin Recherche et Technique S.A.Inventors: Benoit De Gaudemaris, Geraldine Laffargue, Julien Berriot
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Patent number: 9175144Abstract: 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: GrantFiled: October 25, 2010Date of Patent: November 3, 2015Assignees: COMPAGNIE GENERALE DES ETABLISSEMENTS MICHELIN, MICHELIN RECHERCHE ET TECHNIQUE S.A.Inventors: Julien Berriot, Benoit De Gaudemaris, Géraldine Laffargue
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Patent number: 9115258Abstract: 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: GrantFiled: October 10, 2012Date of Patent: August 25, 2015Assignees: COMPAGNIE GENERAL DES ETABLISSEMENTS MICHELIN, MICHELIN RECHERCHE ET TECHNIQUEInventors: Benoit De Gaudemaris, Geraldine Laffargue, Julien Berriot
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Publication number: 20150038617Abstract: 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: ApplicationFiled: October 10, 2012Publication date: February 5, 2015Inventors: Benoit DE Gaudemaris, Geraldine Laffargue, Julien Berriot
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Publication number: 20140296378Abstract: 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: ApplicationFiled: October 10, 2012Publication date: October 2, 2014Inventors: Benoit De Gaudemaris, Geraldine Laffargue, Julien Berriot
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Publication number: 20140256845Abstract: 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: ApplicationFiled: October 10, 2012Publication date: September 11, 2014Applicant: MICHELIN RECHERCHE ET TECHNIQUE, S.A.Inventors: Benoit De Gaudemaris, Geraldine Laffargue, Julien Berriot
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Publication number: 20140249251Abstract: 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: ApplicationFiled: October 10, 2012Publication date: September 4, 2014Applicants: COMPAGNIE GENERALE DES ETABLISSEMENTS MICHELIN, MICHELIN RECHERCHE ET TECHNIQUE, S.A.Inventors: Benoit De Gaudemaris, Geraldine Laffargue, Julien Berriot
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Publication number: 20140249249Abstract: 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: ApplicationFiled: October 10, 2012Publication date: September 4, 2014Inventors: Benoit De Gaudemaris, Geraldine Laffargue, Julien Berriot
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Publication number: 20140249247Abstract: 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: ApplicationFiled: October 10, 2012Publication date: September 4, 2014Applicant: MICHELIN RECHERCHE ET TECHNIQUE, S.A.Inventors: Benoit De Gaudemaris, Geraldine Laffargue, Julien Berriot
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Publication number: 20120264849Abstract: 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: ApplicationFiled: October 25, 2010Publication date: October 18, 2012Applicants: Michelin Recherche et Technique S. A., COMPAGNIE GENERALE DES ETABLISSEMENTS MICHELINInventors: Julien Berriot, Benoît De Gaudemaris, Géraldine Laffargue
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Publication number: 20120264875Abstract: 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: ApplicationFiled: October 25, 2010Publication date: October 18, 2012Applicants: MICHELIN RECHERCHE ET TECHNIQUE S.A., COMPAGNIE GENERALE DES ETABLISSEMENTS MICHELINInventors: Julien Berriot, Benoit De Gaudemaris, Géraldine Laffargue
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Publication number: 20120259035Abstract: 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: ApplicationFiled: October 25, 2010Publication date: October 11, 2012Applicants: MICHELIN RECHERCHE ET TECHNIQUE S.A., COMPAGNIE GENERALE DES ETABLISSEMENTS MICHELINInventors: Julien Berriot, Benoît De Gaudemaris, Géraldine Laffargue
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Patent number: 7557151Abstract: 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: GrantFiled: March 15, 2006Date of Patent: July 7, 2009Assignee: Michelin Recherche et Technique S.A.Inventors: Laure Belin, Jose Carlos Araujo Da Silva, Sylvie Gandon-Pain, Geraldine Laffargue
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Publication number: 20090036579Abstract: 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: ApplicationFiled: March 15, 2006Publication date: February 5, 2009Inventors: Laure Belin, Jose Carlos Araujo Da Silva, Sylvie Gandon-Pain, Geraldine Laffargue