Patents by Inventor Pierre J. Lepetit

Pierre J. Lepetit 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).

  • Process and device for coating small-sized elements with a metal deposit
    Patent number: 4292144
    Abstract: The invention relates to depositing a metal on small-sized objects by electrolytic means. The objects are maintained in suspension in an electrolyte containing the metal to be deposited and which flows in a closed circuit while passing between two electrodes which are alternately anode and cathode, the anode being protected by a mobile screen able to assume two positions. The temperature of the electrolyte and the concentration of ions of said metal therein are maintained constant.
    Type: Grant
    Filed: June 26, 1980
    Date of Patent: September 29, 1981
    Assignee: Office National d'Etudes et de Recherches Aerospatiales
    Inventors: Pierre J. Lepetit, Emile J. Genieys
  • Processes for protecting refractory metallic components against corrosion
    Patent number: 4055706
    Abstract: In the process of forming a coating selected from nickel and cobalt-based atings on a surface of a component made of a metallic material having a total composition by weight comprising at least 50% of metal selected from the group consisting of iron, cobalt and nickel, the improvement comprising forming at least one layer of an alloy of boron with one of nickel, cobalt and nickel/cobalt on the component, after which the boron is eliminated.
    Type: Grant
    Filed: July 10, 1975
    Date of Patent: October 25, 1977
    Assignee: Office National d'Etudes et de Recherches Aerospatiales (O.N.E.R.A.)
    Inventors: Philippe M. Galmiche, Pierre J. Lepetit