Patents by Inventor DELPHINE NAYRAT

DELPHINE NAYRAT 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: 10457793
    Abstract: A tire comprises a rubber composition based on at least one diene elastomer, a reinforcing filler, a specific polyfunctional acrylate derivative and a peroxide, the contents of polyfunctional acrylate derivative and of peroxide being such that the ratio of the content of polyfunctional acrylate derivative to the content of peroxide is greater than or equal to 6.
    Type: Grant
    Filed: December 21, 2015
    Date of Patent: October 29, 2019
    Assignee: COMPAGNIE GENERALE DES ETABLISSEMENTS MICHELIN
    Inventor: Delphine Nayrat
  • Patent number: 10272722
    Abstract: The tire has a carcass reinforcement which has at least one layer and a crown reinforcement that is capped radially by a tread. The tire also includes a layer P of polymer compounds in contact with at least one working crown layer and in contact with the carcass reinforcement. The elastomer compounds forming the calendering layer, radially outermost with respect to the crown of the tire, of the carcass reinforcement layer have a relative density of sulfur bridges of less than 5%. The elastomer compounds forming the layer P have a relative density of sulfur bridges of less than 5%. The elastomer compounds are compositions based on at least one diene elastomer selected from the group of polybutadienes (BRs), synthetic polyisoprenes (IRs), natural rubber (NR), isoprene copolymers, butadiene copolymers with the exception of butadiene-nitrile copolymers (NBRs), apart from diene elastomers bearing carboxyl functions, and mixtures of these diene elastomers.
    Type: Grant
    Filed: July 6, 2016
    Date of Patent: April 30, 2019
    Assignee: Compagnie General Des Etablissements Michelin
    Inventors: Jacques Babaud, Didier Vasseur, Delphine Nayrat
  • Publication number: 20180201067
    Abstract: The reinforcing structure for a tire is in the form of a stratified assembly formed of two layers of reinforcing strips of completely connected cross section, and flattened in shape. According to the method, the strips of each layer are laid side by side in a main direction of laying. The strips of the first layer are spaced apart by a distance that is less than the width of the strips of the second layer and in such a way that the edges of the strips of the first layer overlap the edges of the strips of the second layer. The two layers of strips are separated by a layer of uncoupling rubber.
    Type: Application
    Filed: July 6, 2016
    Publication date: July 19, 2018
    Applicant: COMPAGNIE GENERALE DES ETABLISSEMENTS MICHELIN
    Inventors: Jean-Luc GUERBERT-JUBERT, Luc BESTGEN, Didier VASSEUR, Delphine NAYRAT
  • Publication number: 20180194168
    Abstract: The tire has a carcass reinforcement which has at least one layer and a crown reinforcement that is capped radially by a tread. The tire also includes a layer P of polymer compounds in contact with at least one working crown layer and in contact with the carcass reinforcement. The elastomer compounds forming the calendering layer, radially outermost with respect to the crown of the tire, of the carcass reinforcement layer have a relative density of sulfur bridges of less than 5%. The elastomer compounds forming the layer P have a relative density of sulfur bridges of less than 5%. The elastomer compounds are compositions based on at least one diene elastomer selected from the group of polybutadienes (BRs), synthetic polyisoprenes (IRs), natural rubber (NR), isoprene copolymers, butadiene copolymers with the exception of butadiene-nitrile copolymers (NBRs), apart from diene elastomers bearing carboxyl functions, and mixtures of these diene elastomers.
    Type: Application
    Filed: July 6, 2016
    Publication date: July 12, 2018
    Applicant: COMPAGNIE GENERALE DES ETABLISSEMENTS MICHELIN
    Inventors: Jacques BABAUD, Didier VASSEUR, Delphine NAYRAT
  • Publication number: 20180194170
    Abstract: The tire has a radial carcass reinforcement and a crown reinforcement containing at least two working crown layers of reinforcing elements. The working crown layers are covered radially with a tread that is joined to two beads via two sidewalls. The relative density of sulfur bridges measured according to the equilibrium swelling method is less than 5% in at least 30% of the elastomer compounds present in the surface of at least one zone S in a meridian plane. The elastomer compounds are compositions based on at least one diene elastomer selected from the group of diene elastomers consisting of polybutadienes (abbreviated to “BRs”), synthetic polyisoprenes (IRs), natural rubber (NR), isoprene copolymers, butadiene copolymers with the exception of butadiene-nitrile copolymers (NBRs), apart from diene elastomers bearing carboxyl functions, and mixtures of these diene elastomers.
    Type: Application
    Filed: July 6, 2016
    Publication date: July 12, 2018
    Applicant: COMPAGNIE GENERALE DES ETABLISSEMENTS MICHELIN
    Inventors: Jacques BABAUD, Orel FOURNIER, Didier VASSEUR, Delphine NAYRAT
  • Publication number: 20170349728
    Abstract: A tire comprises a rubber composition based on at least one diene elastomer, a reinforcing filler, a specific polyfunctional acrylate derivative and a peroxide, the contents of polyfunctional acrylate derivative and of peroxide being such that the ratio of the content of polyfunctional acrylate derivative to the content of peroxide is greater than or equal to 6.
    Type: Application
    Filed: December 21, 2015
    Publication date: December 7, 2017
    Inventor: DELPHINE NAYRAT