Patents by Inventor Romain Libert

Romain Libert 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).

  • Publication number: 20240043662
    Abstract: A rubber composition exhibiting a good performance compromise between resistance to mechanical attacks and hysteresis, is based on at least one elastomer matrix predominantly comprising at least one isoprene elastomer, a reinforcing filler, cellulose pulp, and a crosslinking system, wherein the cellulose pulp has a length within a range extending from 1.1 to 4.9 mm A rubber article, in particular a pneumatic or non-pneumatic tire for off-road vehicles, a rubber caterpillar track and a conveyor belt comprising the composition are disclosed.
    Type: Application
    Filed: December 3, 2021
    Publication date: February 8, 2024
    Inventors: ROMAIN LIBERT, THOMAS FERRAND
  • Publication number: 20220017676
    Abstract: A tire comprises a polymeric composition comprising at least one block thermoplastic elastomer comprising at least one elastomer block and at least one thermoplastic block, in which each elastomer block comprises at least 70% by weight of units resulting from isoprene, with respect to the weight of said elastomer block, and at least one thermoplastic block comprises 40% to 80% by weight of units resulting from one or more styrenic monomers and 10% to 63% by weight of units resulting from diphenylethylene, with respect to the weight of said thermoplastic block.
    Type: Application
    Filed: December 9, 2019
    Publication date: January 20, 2022
    Inventors: JEAN COUE, STEPHANIE LAUBE, ROMAIN LIBERT, GARRY VEGI
  • Publication number: 20210331520
    Abstract: The invention relates to a tyre having improved mechanical properties, comprising a rubber composition based on at least one elastomeric matrix mainly comprising at least one epoxidized polyisoprene having a molar degree of epoxidation greater than 40%, at least one polyamide of which the melting point is less than 170° C., and a crosslinking system.
    Type: Application
    Filed: October 7, 2019
    Publication date: October 28, 2021
    Inventors: JOSE-CARLOS ARAUJO DA SILVA, ROMAIN LIBERT
  • Patent number: 10654317
    Abstract: A tire is provided with an external sidewall, said external sidewall comprising at least one elastomeric composition based on: (a) an elastomeric matrix comprising at least one diene elastomer, (b) a crosslinking system, and (c) at least one polymer incompatible with the elastomeric matrix. A process for the preparation of an elastomeric composition for an external sidewall is also disclosed.
    Type: Grant
    Filed: November 24, 2015
    Date of Patent: May 19, 2020
    Assignee: COMPAGNIE GENERALE DES ETABLISSEMENTS MICHELIN
    Inventors: Jean-Michel Vacherand, Romain Libert, Marc Greiveldinger
  • Publication number: 20180355153
    Abstract: The invention relates to a tyre comprising at least one rubber composition based on at least one diene elastomer, a reinforcing filler, a plasticizing system and a crosslinking system, characterized in that the composition comprises hexagonal boron nitride having a BET specific surface area of greater than or equal to 10 m2/g as reinforcing filler, at a content ranging from 30 to 350 parts per hundred parts of elastomer, phr, and a coupling agent capable of binding the boron nitride to the diene elastomer.
    Type: Application
    Filed: December 14, 2015
    Publication date: December 13, 2018
    Inventors: VINCENT ABAD, ROMAIN LIBERT
  • Publication number: 20170313131
    Abstract: A tire is provided with an external sidewall, said external sidewall comprising at least one elastomeric composition based on: (a) an elastomeric matrix comprising at least one diene elastomer, (b) a crosslinking system, and (c) at least one polymer incompatible with the elastomeric matrix. A process for the preparation of an elastomeric composition for an external sidewall is also disclosed.
    Type: Application
    Filed: November 24, 2015
    Publication date: November 2, 2017
    Applicants: COMPAGNIE GENERALE DES ETABLISSEMENTS MICHELIN, Michelin Recherche ET Technique S.A.
    Inventors: JEAN-MICHEL VACHERAND, ROMAIN LIBERT, MARC GREIVELDINGER
  • Publication number: 20170151842
    Abstract: A radial tire (1) for a motor vehicle comprises a crown (2) comprising a tread (3) provided with at least a radially outer part (3a) intended to come into contact with the road; two non-stretchable beads (4), two sidewalls (5) connecting the beads (4) to the tread (3), a carcass reinforcement (6) passing into the two sidewalls (5) and anchored in the beads (4); a crown reinforcement or belt (7) positioned circumferentially between the radially outer part (3a) of the tread (3) and the carcass reinforcement (6); a radially inner elastomer layer (8) referred to as “underlayer”, which is positioned circumferentially between the radially outer part (3a) of the tread (3) and the carcass reinforcement (6), which comprises at least one thermoplastic elastomer which is a block copolymer comprising at least one elastomer block and at least one thermoplastic block, and which also comprises at least one magnetic filler.
    Type: Application
    Filed: May 26, 2015
    Publication date: June 1, 2017
    Inventors: EMMANUEL CUSTODERO, VINCENT ABAD, ROMAIN LIBERT
  • Publication number: 20170151843
    Abstract: A radial tire (1) for a motor vehicle comprises a crown (2) comprising a tread (3) provided with at least a radially outer part (3a) intended to come into contact with the road; two non-stretchable beads (4), two sidewalls (5) connecting the beads (4) to the tread (3), a carcass reinforcement (6) passing into the two sidewalls (5) and anchored in the beads (4); a crown reinforcement or belt (7) positioned circumferentially between the radially outer part (3a) of the tread (3) and the carcass reinforcement (6); a radially inner elastomer layer (8) referred to as “underlayer”, which is positioned circumferentially between the radially outer part (3a) of the tread (3) and the carcass reinforcement (6), which comprises at least one thermoplastic elastomer which is a block copolymer comprising at least one elastomer block and at least one thermoplastic block, and which also comprises at least one conductive filler.
    Type: Application
    Filed: May 26, 2015
    Publication date: June 1, 2017
    Inventors: EMMANUEL CUSTODERO, VINCENT ABAD, ROMAIN LIBERT
  • Publication number: 20150079323
    Abstract: A pneumatic object or inflatable article includes a gastight elastomer layer. The elastomer layer is formed of a material that includes at least one thermoplastic polyisobutylene block elastomer and a platy filler, such that relationships of: EX?/EZ?>1.2 and EY?/EZ?>1.2 apply, with Z being a direction normal to the elastomer layer, X and Y being directions orthogonal to Z, and EX?, EY? and EZ? being dynamic moduli in compression of the elastomer layer in the X, Y, and Z directions, respectively.
    Type: Application
    Filed: April 11, 2013
    Publication date: March 19, 2015
    Applicant: Michelin Recherche et Technique S.A.
    Inventors: Vincent Abad, Vincent Lemal, Romain Libert
  • Publication number: 20150034226
    Abstract: The present invention relates to a radial tyre (1) for a motor vehicle, comprising a crown (2) comprising a tread (3) provided with at least a radially outer part (3a) intended to come into contact with the road; two non-stretchable beads (4), two sidewalls (5) connecting the beads (4) to the tread (3), a carcass reinforcement (6) passing into the two sidewalls (5) and anchored in the beads (4); a crown reinforcement or belt (7) positioned circumferentially between the radially outer part (3a) of the tread (3) and the carcass reinforcement (6); a radially inner elastomer layer (8), referred to as “underlayer”, having a formulation different from the formulation of the radially outer part (3a) of the tread, this underlayer being itself positioned circumferentially between the radially outer part (3a) of the tread (3) and the carcass reinforcement (6), characterized in that the said underlayer comprises at least one thermoplastic elastomer, the said thermoplastic elastomer being a block copolymer comprising at
    Type: Application
    Filed: March 15, 2013
    Publication date: February 5, 2015
    Inventors: Vincent Abad, Romain Libert, Emmanuel Custodero
  • Publication number: 20150034230
    Abstract: The present invention relates to a process for retreading a radial tyre (1) for a motor vehicle, comprising: a crown (2) comprising a tread (3) provided with at least a radially outer part (3a) intended to come into contact with the road; two non-stretchable beads (4), two sidewalls (5) connecting the beads (4) to the tread (3), a carcass reinforcement (6) passing into the two sidewalls (5) and anchored in the beads (4); a crown reinforcement or belt (7) positioned circumferentially between the radially outer part (3a) of the tread (3) and the carcass reinforcement (6); a radially inner elastomer layer (8), referred to as “underlayer”, having a formulation different from the formulation of the radially outer part (3a) of the tread, this underlayer being itself positioned circumferentially between the radially outer part (3a) of the tread (3) and the crown reinforcement (7); the said underlayer comprising at least one thermoplastic elastomer, the said thermoplastic elastomer being a block copolymer compri
    Type: Application
    Filed: March 15, 2013
    Publication date: February 5, 2015
    Inventors: Vincent Abad, Romain Libert, Emmanuel Custodero