Patents by Inventor Roger Speri

Roger Speri 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).

  • Apparatus for thermochemical treatments of metals by ionic bombardment
    Patent number: 4672170
    Abstract: Apparatus for thermochemical treatment of metals with accurate control of the treatment temperature in a furnace having a structure similar to that of a classic furnace for thermal or thermochemical treatment in a rarified atmosphere, equipped with a controlled heater, and possibly a cooler, an anode, and a cathode supporting the pieces to be treated. A cold plasma is generated around the pieces to be treated by applying between the anode and the cathode a pulse train at a relatively high frequency and of very short pulse width in relation to pulse repetition rate.
    Type: Grant
    Filed: October 4, 1984
    Date of Patent: June 9, 1987
    Assignee: Societe Anonyme dite: Vide et Traitement
    Inventor: Roger Speri
  • Process for thermochemical treatments of metals by ionic bombardment
    Patent number: 4490190
    Abstract: A process for thermochemical treatment of metals with accurate control of the treatment temperature in a furnace having a structure similar to that of a classic furnace for thermal or thermochemical treatment in a rarified atmosphere, equipped with controlled heating means and, possibly cooling means, and comprising at least an anode and a cathode supporting the pieces to be treated. A cold plasma is generated around the pieces to be treated by applying between the anode and the cathode a pulse train at a relatively high frequency and of very short pulse width in relation to pulse repetition rate.
    Type: Grant
    Filed: March 8, 1982
    Date of Patent: December 25, 1984
    Assignee: Societe Anonyme Dite: Vide et Traitement
    Inventor: Roger Speri