Patents by Inventor Philippe Harlet

Philippe Harlet 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).

  • Flat product, such as sheet, made of steel having a high yield strength and exhibiting good ductility and process for manufacturing this product
    Patent number: 6395108
    Abstract: A flat product made of multiphase steel and a method for preparing the steel includes hot rolling at a temperature at which the austenite phase is stable, then tempering to form a C and Mn-enriched phase in a matrix, followed by a heat treatment to form austenite islands and/or enriching in Mn the already formed austenite and cooling down to room temperature so as to obtain a final product with a ferrite matrix containing residual austenite, bainite and/or martensite islands.
    Type: Grant
    Filed: April 30, 2001
    Date of Patent: May 28, 2002
    Assignee: Recherche et Developpement du Groupe Cockerill Sambre
    Inventors: Klaus Eberle, Philippe Harlet, Pierre Cantinieaux
  • Method for making a composite metal product
    Patent number: 6361628
    Abstract: The invention concerns a method for making a composite metal product by adding at least one substance to said product, which consists in using a metal product in the form of a continuous strip (1) moved in a vacuum chamber (2), applying the substance on said strip and diffusing said substance at least partially into the strip when it is passing in the vacuum chamber maintaining it at a temperature lower than its melting point, but sufficiently high for enabling said diffusion.
    Type: Grant
    Filed: April 17, 2000
    Date of Patent: March 26, 2002
    Assignee: Recherche et Developpment du Groupe Cockerill Sambre
    Inventors: Pierre Van Den Brande, Alain Weymeersch, Fabrizio Maseri, Philippe Harlet, Lucien Renard
  • Flat product, such as sheet, made of steel having a high yield strength and exhibiting good ductility and process for manufacturing this product
    Publication number: 20010015245
    Abstract: A flat product made of multiphase steel and a method for preparing the steel includes hot rolling at a temperature at which the austenite phase is stable, then tempering to form a C and Mn-enriched phase in a matrix, followed by a heat treatment to form austenite islands and/or enriching in Mn the already formed austenite and cooling down to room temperature so as to obtain a final product with a ferrite matrix containing residual austenite, bainite and/or martensite islands.
    Type: Application
    Filed: April 30, 2001
    Publication date: August 23, 2001
    Applicant: Recherche Et Developpement Du Groupe Cuckerill Sambre (RD-CS)
    Inventors: Klaus Eberle, Philippe Harlet, Pierre Cantinieaux
  • Process for annealing a moving metal substrate
    Patent number: 6099667
    Abstract: A process for annealing a moving metal substrate, especially a steel sheet.
    Type: Grant
    Filed: February 10, 1998
    Date of Patent: August 8, 2000
    Assignee: Recherche et Developpement du Groupe Cockerill Sambre
    Inventors: Pierre Vanden Brande, Alain Weymeersch, Philippe Harlet