Patents by Inventor Jean-Marc Donzac

Jean-Marc Donzac 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 of making shaped members length made from carbon-carbon composite materials
    Patent number: 5294383
    Abstract: The process includes impregnating carbon threads with molten pitch in an impregnation tank 4, shaping them by means of a short die 8, subjecting the so thread to thermal treatment by progressive heating while it is continuously passed through a treatment furnace 9, then cutting the shaped member when it leaves the furnace.
    Type: Grant
    Filed: November 18, 1992
    Date of Patent: March 15, 1994
    Assignee: Aerospatiale Societe Nationale Industrielle
    Inventors: Jean-Marc Donzac, Gerard Rousseau, Pierre Terrade