Patents by Inventor Joel Messager

Joel Messager 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).

  • Plasma arc forming process and device
    Patent number: 4650956
    Abstract: For forming the plasma arc there is used nitrogen protoxide in the liquid state which is conducted through a valve (12) to an expansion orifice (33) which produces a cooling effect on the electrode (5,6). Applications in particular in plasma arc torch cutting.
    Type: Grant
    Filed: December 5, 1985
    Date of Patent: March 17, 1987
    Assignee: L'Air Liquide
    Inventors: Gerard Marhic, Joel Messager