Patents by Inventor Laurent Bombillon

Laurent Bombillon 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).

  • Part coated with a non-hydrogenated amorphous carbon coating on an undercoat comprising chromium, carbon and silicon
    Patent number: 11732343
    Abstract: Disclosed is a part comprising a metal substrate, a non-hydrogenated amorphous ta-C or aC carbon coating that coats the substrate, and an undercoat which is based on chromium (Cr), carbon (C) and silicon (Si) and is disposed between the metal substrate and the amorphous carbon coating and to which the amorphous carbon coating is applied, characterized in that the undercoat included, at its interface with the amorphous carbon coating, a ratio of silicon in atomic percent to chromium in atomic percent (Si/Cr) of 0.3 to 0.60, and a ratio of carbon in atomic percent to silicon in atomic percent (C/Si) of 2.5 to 3.5.
    Type: Grant
    Filed: June 17, 2019
    Date of Patent: August 22, 2023
    Assignee: HYDROMECANIQUE ET FROTTEMENT
    Inventors: Laurent Bombillon, Fabrice Prost
  • PART COATED WITH A NON-HYDROGENATED AMORPHOUS CARBON COATING ON AN UNDERCOAT COMPRISING CHROMIUM, CARBON AND SILICON
    Publication number: 20210310112
    Abstract: Disclosed is a part comprising a metal substrate, a non-hydrogenated amorphous ta-C or aC carbon coating that coats the substrate, and an undercoat which is based on chromium (Cr), carbon (C) and silicon (Si) and is disposed between the metal substrate and the amorphous carbon coating and to which the amorphous carbon coating is applied, characterized in that the undercoat included, at its interface with the amorphous carbon coating, a ratio of silicon in atomic percent to chromium in atomic percent (Si/Cr) of 0.3 to 0.60, and a ratio of carbon in atomic percent to silicon in atomic percent (C/Si) of 2.5 to 3.5.
    Type: Application
    Filed: June 17, 2019
    Publication date: October 7, 2021
    Inventors: Laurent BOMBILLON, Fabrice PROST
  • PART COATED WITH A HYDROGENATED AMORPHOUS CARBON COATING ON AN UNDERCOAT COMPRISING CHROMIUM, CARBON AND SILICON
    Publication number: 20210254220
    Abstract: Disclosed is a part including a metal substrate, a non-hydrogenated amorphous ta-C or aC carbon coating that coats the substrate, and an undercoat which is based on chromium (Cr), carbon (C) and silicon (Si) and is disposed between the metal substrate and the amorphous carbon coating and to which the amorphous carbon coating is applied, characterized in that the undercoat included, at its interface with the amorphous carbon coating, a ratio of silicon in atomic percent to chromium in atomic percent (Si/Cr) of 0.35 to 0.60, and a ratio of carbon in atomic percent to silicon in atomic percent (C/Si) of 2.5 to 3.5.
    Type: Application
    Filed: June 17, 2019
    Publication date: August 19, 2021
    Inventors: Laurent BOMBILLON, Fabrice PROST
  • Internal combustion engine liner
    Patent number: 9874174
    Abstract: An inside surface of an internal combustion engine liner is treated to have a surface roughness Ra smaller than 0.06 ?m, and then receives a DLC coating. A method of producing the internal combustion engine liner includes: forming the liner from a metal material, polishing an inside surface of the liner to obtain a polished inside surface of roughness Ra smaller than 0.06 ?m, and applying the DLC coating to the polished inside surface.
    Type: Grant
    Filed: May 6, 2013
    Date of Patent: January 23, 2018
    Assignee: H.E.F.
    Inventors: Christophe Heau, Laurent Bombillon, Philippe Maurin-Perrier
  • INTERNAL COMBUSTION ENGINE JACKET
    Publication number: 20160369736
    Abstract: An inside surface of an internal combustion engine jacket is treated to have a surface roughness Ra smaller than 0.06 ?m, and then receives a DLC coating. A method of producing the internal combustion engine jacket includes: forming the jacket from a metal material, polishing an inside surface of the jacket to obtain a polished inside surface of roughness Ra smaller than 0.06 ?m, and applying the DLC coating to the polished inside surface.
    Type: Application
    Filed: May 6, 2013
    Publication date: December 22, 2016
    Applicant: H.E.F.
    Inventors: Christophe HEAU, Laurent BOMBILLON, Philippe MAURIN-PERRIER
  • Part having a DLC coating and method for applying the DLC coating
    Patent number: 9103016
    Abstract: A part has a layer with a WC-C composition gradient, with the exception of a metal-containing undercoat and with the exception of an ion implantation layer and a DLC surface layer having cohesive behavior in scratch tests.
    Type: Grant
    Filed: May 16, 2012
    Date of Patent: August 11, 2015
    Assignee: H.E.F.
    Inventors: Christophe Heau, Laurent Bombillon, Philippe Maurin-Perrier
  • PART HAVING A DLC COATING AND METHOD FOR APPLYING THE DLC COATING
    Publication number: 20140087190
    Abstract: A part has a layer with a WC-C composition gradient, with the exception of a metal-containing undercoat and with the exception of an ion implantation layer and a DLC surface layer having cohesive behaviour in scratch tests.
    Type: Application
    Filed: May 16, 2012
    Publication date: March 27, 2014
    Applicant: H.E.F.
    Inventors: Christophe Heau, Laurent Bombillon, Philippe Maurin-Perrier