Patents by Inventor Jean Metivier

Jean Metivier 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).

  • Method of annealing iron-based products comprised of carbon steel rich in chromium and manganese
    Patent number: 5536338
    Abstract: A method of annealing of siderurgical products comprised of carbon steel having a chromium content in the range 0.15-1.5 wt. % and a manganese content also in the range 0.15-1.5 wt. %, whereby said products are held in an annealing furnace under nitrogen atmosphere to bring about globulization of the perlite; characterized in that oxygen is added to this atmosphere, in an amount greater than or equal to 0.5 vol. %.
    Type: Grant
    Filed: December 6, 1994
    Date of Patent: July 16, 1996
    Assignee: ASCOMETAL (Societe Anonyme)
    Inventors: Jean Metivier, Helene Chaudanson, Jean Dhers
  • Process for the preparation of dextrorotatory 2-phenoxypropionic acid derivatives
    Patent number: 4173709
    Abstract: Dextrorotatory 2-phenoxypropionic acids are made by heating an alkali metal salt of dextrorotatory 2-chloropropionic acid with an alkali metal phenate in an inert organic solvent of high boiling point under reflux.
    Type: Grant
    Filed: February 8, 1977
    Date of Patent: November 6, 1979
    Assignee: Rhone-Poulenc S.A.
    Inventors: Jean Metivier, Michel Sauli