Patents by Inventor Karine Longchambon

Karine Longchambon 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: 11732117
    Abstract: A rubber composition is based on at least: a diene elastomer; a reinforcing inorganic filler; an agent for coupling the reinforcing inorganic filler with the diene elastomer, said coupling agent being a blocked mercaptosilane of formula (I), as described in the claims; a hydrocarbon-based resin predominantly composed of monomers chosen from the group consisting of cyclopentadiene, dicyclopentadiene, methylcyclopentadiene and mixtures thereof, and a crosslinking system. A semi-finished article and a tire may comprise at least one such rubber composition.
    Type: Grant
    Filed: October 3, 2018
    Date of Patent: August 22, 2023
    Assignee: COMPAGNIE GENERALE DES ETABLISSEMENTS MICHELIN
    Inventors: Philippe Labrunie, Karine Longchambon, Laurent Copey
  • Publication number: 20220371371
    Abstract: A tire comprises an outer strip (2) having a tread (21). The outer strip (2) has a central part and two axially outer parts and comprises at least two rubber compounds (M1, M2) making up at least 90% of the volume of the outer strip (2). The first compound (M1) is radially outside of the second compound (M2), which makes up at least 60% of the axially outer parts and being disposed in a layer that is substantially continuous from one axially outer part to the other, said layer having a minimum thickness at least equal to 0.3 mm. The compound M1 has a modulus G* that is greater than 1.35 times and less than 3 times that of the compound M2. The compound M1 has a dynamic loss at 0° C. greater than 0.5 and the compound M2 has a dynamic loss at 23° C. less than 0.3.
    Type: Application
    Filed: October 15, 2020
    Publication date: November 24, 2022
    Inventors: MIGUEL FERNANDEZ, REGIS SCHACH, PHILIPPE LABRUNIE, KARINE LONGCHAMBON, ALEXANDRE TOBIE
  • Publication number: 20220371370
    Abstract: A tire comprises an outer strip (2) having a tread (21). The outer strip (2) has a central part and two axially outer parts and comprises at least two rubber compounds (M1, M2) making up at least 90% of the volume of the outer strip (2). The first compound (M1) is radially on the outside of the second compound (M2), which makes up at least 60% of the axially outer parts and being disposed in a layer that is substantially continuous from one axially outer part to the other, said layer having a minimum thickness at least equal to 0.3 mm. The compound M1 has a modulus G* that is greater than 1.35 times and less than 3 times that of the compound M2. The compound M1 has a dynamic loss at 0° C. greater than 0.5 and the compound M2 has a dynamic loss at 23° C. less than 0.3.
    Type: Application
    Filed: October 15, 2020
    Publication date: November 24, 2022
    Inventors: MIGUEL FERNANDEZ, KARINE LONGCHAMBON, REGIS SCHACH, PHILIPPE LABRUNIE, ALEXANDRE TOBIE
  • Patent number: 11352484
    Abstract: A rubber composition is based on at least: a diene elastomer; a reinforcing inorganic filler; an agent for coupling the reinforcing inorganic filler with the diene elastomer, said coupling agent being an organofunctional silane comprising at least one oligomer of general formula (I), as described in the claims, bearing at least one blocked mercaptosilane unit and at least one mercaptosilane unit, a hydrocarbon-based resin predominantly composed of monomers chosen from the group consisting of cyclopentadiene, dicyclopentadiene, methylcyclopentadiene and mixtures thereof, and a crosslinking system. A semi-finished article and a tire may comprise at least one such rubber composition.
    Type: Grant
    Filed: October 3, 2018
    Date of Patent: June 7, 2022
    Assignee: COMPAGNIE GENERALE DES ETABLISSEMENTS MICHELIN
    Inventors: Laurent Copey, Karine Longchambon
  • Publication number: 20200332092
    Abstract: A rubber composition is based on at least: a diene elastomer; a reinforcing inorganic filler; an agent for coupling the reinforcing inorganic filler with the diene elastomer, said coupling agent being an organofunctional silane comprising at least one oligomer of general formula (I), as described in the claims, bearing at least one blocked mercaptosilane unit and at least one mercaptosilane unit, a hydrocarbon-based resin predominantly composed of monomers chosen from the group consisting of cyclopentadiene, dicyclopentadiene, methylcyclopentadiene and mixtures thereof, and a crosslinking system. A semi-finished article and a tire may comprise at least one such rubber composition.
    Type: Application
    Filed: October 3, 2018
    Publication date: October 22, 2020
    Inventors: LAURENT COPEY, KARINE LONGCHAMBON
  • Publication number: 20200325312
    Abstract: A rubber composition is based on at least: a diene elastomer; a reinforcing inorganic filler; an agent for coupling the reinforcing inorganic filler with the diene elastomer, said coupling agent being a blocked mercaptosilane of formula (I), as described in the claims; a hydrocarbon-based resin predominantly composed of monomers chosen from the group consisting of cyclopentadiene, dicyclopentadiene, methylcyclopentadiene and mixtures thereof, and a crosslinking system. A semi-finished article and a tire may comprise at least one such rubber composition.
    Type: Application
    Filed: October 3, 2018
    Publication date: October 15, 2020
    Inventors: PHILIPPE LABRUNIE, KARINE LONGCHAMBON, LAURENT COPEY
  • Patent number: 10227475
    Abstract: A tire comprises a rubber composition based on at least one diene elastomer, a reinforcing filler predominantly comprising silica, a crosslinking system, and a primary amine of formula (I): R—NH2 (I), in which R represents a linear or branched hydrocarbon group comprising from 8 to 24 carbon atoms. The rubber composition is essentially devoid of guanidine derivative.
    Type: Grant
    Filed: December 17, 2012
    Date of Patent: March 12, 2019
    Assignee: Compagnie Generale Des Etablissements Michelin
    Inventors: Christelle Darnaud, Karine Longchambon
  • Patent number: 9624358
    Abstract: The invention relates to a tire rubber composition based on at least one diene elastomer, an inorganic filler as reinforcing filler, a coupling agent providing the bonding between the inorganic filler and the diene elastomer, characterized in that the coupling agent is an azosilane compound of following formula (I): (G1)3-a(G2)aSi—Z—NH—C(O)—N?N—C(O)—NH—Z—Si(G1)3-a(G2)a??(I) in which: G1, identical to or different from one another, each represent a monovalent hydrocarbon-based group chosen from branched or unbranched, substituted or unsubstituted alkyls, having from 1 to 18 carbon atoms, substituted or unsubstituted cycloalkyls or aryls, having from 5 to 18 carbon atoms, G2, identical to or different from one another, each represent a hydroxyl group or a monovalent group in the form (G3)n-OG1 in which G3 is a divalent linking group having from 1 to 18 carbon atoms and comprising one or more heteroatoms chosen from O, S, Si and N, n being a number equal to or higher than 0 and less than or equal to 18, Z r
    Type: Grant
    Filed: March 28, 2012
    Date of Patent: April 18, 2017
    Assignees: COMPAGNIE GENERALE DES ETABLISSEMENTS MICHELIN, MICHELIN RECHERCHE ET TECHNIQUE S.A.
    Inventors: Christelle Darnaud, José Carlos Araujo Da Silva, Karine Longchambon, Anne Veyland
  • Patent number: 9522571
    Abstract: A tire comprises a rubber composition based on at least one diene elastomer, a reinforcing filler predominantly comprising silica, a crosslinking system, and a hydroxyalkylpiperazine of formula (I): in which R1 represents a linear or branched alkyl group comprising from 1 to 18 carbon atoms, R2 represents a linear or branched alkylene group comprising from 1 to 18 carbon atoms, it being understood that R1 and R2 can bear one or more additional hydroxyl groups. The rubber composition is essentially devoid of guanidine derivative.
    Type: Grant
    Filed: December 17, 2012
    Date of Patent: December 20, 2016
    Assignees: COMPAGNIE GENERALE DES ETABLISSEMENTS MICHELIN, MICHELIN RECHERCHE ET TECHNIQUE S.A.
    Inventors: Christelle Darnaud, Karine Longchambon
  • Patent number: 9267014
    Abstract: A tire comprising a rubber composition based on at least one diene elastomer, a reinforcing filler predominantly comprising silica, a crosslinking system, and an alkali metal hydroxide or alkaline earth metal hydroxide. The rubber composition is essentially devoid of guanidine derivative.
    Type: Grant
    Filed: December 17, 2012
    Date of Patent: February 23, 2016
    Assignees: Compagnie Generale Des Etablissements Michelin, Michelin Recherche et Technique S.A.
    Inventors: Christelle Darnaud, Karine Longchambon
  • Patent number: 9260588
    Abstract: A tire comprises a rubber composition based on at least one diene elastomer, a reinforcing filler predominantly comprising silica, a crosslinking system, and an amino ether alcohol of formula (I): R1—O(—R2—O)n—R3—NH2 (I), in which R1 represents a linear or branched alkyl group comprising from 1 to 18 carbon atoms, R2 and R3 independently represent a linear or branched alkylene group comprising from 1 to 18 carbon atoms, and n represents an integer from 0 to 20, it being understood that the amino ether alcohol bears one or more hydroxyl groups on at least one carbon-based chain chosen from R1, R2 and R3. The rubber composition is essentially devoid of guanidine derivative.
    Type: Grant
    Filed: December 17, 2012
    Date of Patent: February 16, 2016
    Assignees: Compagnie Generale des Etablissements Michelin, Michelin Recherche et Technique S.A.
    Inventors: Christelle Darnaud, Karine Longchambon
  • Publication number: 20150322241
    Abstract: A tire comprises a rubber composition based on at least one diene elastomer, a reinforcing filler predominantly comprising silica, a crosslinking system, and a primary amine of formula (I): R—NH2 (I), in which R represents a linear or branched hydrocarbon group comprising from 8 to 24 carbon atoms. The rubber composition is essentially devoid of guanidine derivative.
    Type: Application
    Filed: December 17, 2012
    Publication date: November 12, 2015
    Inventors: CHRISTELLE DARNAUD, KARINE LONGCHAMBON
  • Publication number: 20150306912
    Abstract: A tire comprises a rubber composition based on at least one diene elastomer, a reinforcing filler predominantly comprising silica, a crosslinking system, and a hydroxyalkylpiperazine of formula (I): in which R1 represents a linear or branched alkyl group comprising from 1 to 18 carbon atoms, R2 represents a linear or branched alkylene group comprising from 1 to 18 carbon atoms, it being understood that R1 and R2 can bear one or more additional hydroxyl groups. The rubber composition is essentially devoid of guanidine derivative.
    Type: Application
    Filed: December 17, 2012
    Publication date: October 29, 2015
    Inventors: CHRISTELLE DARNAUD, KARINE LONGCHAMBON
  • Publication number: 20150158994
    Abstract: A tire comprises a rubber composition based on at least one diene elastomer, a reinforcing filler predominantly comprising silica, a crosslinking system, and an amino ether alcohol of formula (I): R1—O(—R2—O)n—R3—NH2 (I), in which R1 represents a linear or branched alkyl group comprising from 1 to 18 carbon atoms, R2 and R3 independently represent a linear or branched alkylene group comprising from 1 to 18 carbon atoms, and n represents an integer from 0 to 20, it being understood that the amino ether alcohol bears one or more hydroxyl groups on at least one carbon-based chain chosen from R1, R2 and R3. The rubber composition is essentially devoid of guanidine derivative.
    Type: Application
    Filed: November 17, 2012
    Publication date: June 11, 2015
    Inventors: Christelle Darnaud, Karine Longchambon
  • Patent number: 9000092
    Abstract: The invention relates to a rubber composition that is free of zinc or that contains less than 0.5 phr of zinc, which can be used for the manufacture of tires, based on at least: one diene elastomer; one sulphur-based crosslinking system; one inorganic filler as reinforcing filler; one blocked mercaptosilane of general formula I below: (R3O)R2R1—Si—Z—S—C(?O)-A in which: R1 and R2, which are identical or different, represent a monovalent hydrocarbon-based group chosen from alkyls, which are linear or branched, cycloalkyls or aryls, having from 1 to 18 carbon atoms; R3 represents a monovalent hydrocarbon-based group chosen from linear or branched alkyls having from 1 to 4 carbon atoms; A represents hydrogen or a monovalent hydrocarbon-based group chosen from alkyls, which are linear or branched, cycloalkyls or aryls, having from 1 to 18 carbon atoms; Z represents a divalent bonding group comprising from 1 to 18 carbon atoms.
    Type: Grant
    Filed: December 18, 2009
    Date of Patent: April 7, 2015
    Assignees: Compagnie Generale des Etablissements Michelin, Michelin Recherche et Technique S.A.
    Inventors: Laure Belin, Karine Longchambon, José Carlos Araujo Da Silva
  • Patent number: 8987353
    Abstract: A rubber composition that can be used for the manufacture of tires, based on at least one diene elastomer; one sulphur-based crosslinking system; one inorganic filler as reinforcing filler; one coupling agent of general formula I below: (HO)3-nR1nSi—Z—Sm—R2 wherein in which: R1, which are identical or different, each represent a monovalent hydrocarbon-based group chosen from alkyls, which are linear or branched, cycloalkyls or aryls, having from 1 to 18 carbon atoms; R2 represents a monovalent hydrocarbon-based group chosen from alkyls, which are linear or branched, cycloalkyls or aryls, having from 1 to 30 carbon atoms; Z represents a divalent bonding group comprising from 1 to 18 carbon atoms; n is an integer equal to 0, 1 or 2; and m is a number greater than or equal to 2.
    Type: Grant
    Filed: May 20, 2010
    Date of Patent: March 24, 2015
    Assignees: Michelin Recherche et Technique S.A., Compagnie Generale des Etablissements Michelin
    Inventors: Karine Longchambon, José Carlos Araujo Da Silva, Nicolas Seeboth
  • Patent number: 8987361
    Abstract: An organosilane of general formula I below: (HO)2R1Si—Z—Sm—R2 in which: R1, which are identical or different, each represent a monovalent hydrocarbon-based group chosen from alkyls, which are linear or branched, cycloalkyls or aryls, having from 1 to 18 carbon atoms; R2 represents a monovalent hydrocarbon-based group chosen from alkyls, which are linear or branched, cycloalkyls or aryls, having from 1 to 30 carbon atoms; Z represents a divalent bonding group comprising from 1 to 18 carbon atoms; and m is a number greater than or equal to 2.
    Type: Grant
    Filed: May 20, 2010
    Date of Patent: March 24, 2015
    Assignees: Michelin Recherche et Technique S.A., Compagnie Generale des Etablissements Michelin
    Inventors: Karine Longchambon, José Carlos Araujo Da Silva, Nicolas Seeboth, Sergey Ivanov
  • Patent number: 8957155
    Abstract: The invention relates to a blocked mercaptosilane of general formula I below: (HO)2R1—Si—Z—S—C(?O)-A in which: R1 represents a monovalent hydrocarbon-based group chosen from alkyls, which are linear or branched, cycloalkyls or aryls, having from 1 to 18 carbon atoms; A represents hydrogen or a monovalent hydrocarbon-based group chosen from alkyls, which are linear or branched, cycloalkyls or aryls, having from 1 to 18 carbon atoms; Z represents a divalent bonding group comprising from 1 to 18 carbon atoms.
    Type: Grant
    Filed: December 18, 2009
    Date of Patent: February 17, 2015
    Assignees: Compagnie Generale des Etablissements, Michelin Recherche et Technique S.A.
    Inventors: Nicolas Seeboth, Karine Longchambon, Laure Belin, José Carlos Araujo Da Silva
  • Publication number: 20150031814
    Abstract: A tire comprising a rubber composition based on at least one diene elastomer, a reinforcing filler predominantly comprising silica, a crosslinking system, and an alkali metal hydroxide or alkaline earth metal hydroxide. The rubber composition is essentially devoid of guanidine derivative.
    Type: Application
    Filed: December 17, 2012
    Publication date: January 29, 2015
    Inventors: Christelle Darnaud, Karine Longchambon
  • Publication number: 20150005448
    Abstract: A rubber composition, devoid of zinc or comprising less than 0.5 phr of zinc and devoid of guanidine derivatives or comprising less than 0.
    Type: Application
    Filed: December 12, 2012
    Publication date: January 1, 2015
    Inventors: Karine Longchambon, José Carlos Araujo Da Silva, Nicolas Seeboth