Patents by Inventor Henri Chevrel

Henri Chevrel 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).

  • Patent number: 5299731
    Abstract: A process for welding stainless steel tubing in the presence of an inert gas comprising a silicon base gas, in particular silane SiH.sub.4. During the welding operation, a suitable quantity of silicon is deposited by chemical vapor deposition at the weld joint to significantly improve the corrosion resistance of the weld.
    Type: Grant
    Filed: February 22, 1993
    Date of Patent: April 5, 1994
    Assignee: L'Air Liquide
    Inventors: A. Nimal Liyanage, Henri Chevrel, Alain Boireau, Jean-Marie Friedt