Patents by Inventor Olivier M. G. Sergent

Olivier M. G. Sergent 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 for manufacturing extrusion dies and dies thus obtained
    Patent number: 5270513
    Abstract: In this process for manufacturing extrusion dies each comprising a main body (4) and a mandrel (12M) for channeling the material or materials extruded simultaneously, mounted in this body and provided, or not, with a core (15) and, on the one hand, the main body (4) of the die is provided with a central extrusion passage (5) made, along the outer profile (17) of the product desired, by means of a cutting operation using wire (2) erosion and, on the other hand, the mandrel (12M) internal to the die body, provided, or not, with a core (15), is obtained by molding a material suitably resisting the heat of extrusion and having good toughness.
    Type: Grant
    Filed: July 13, 1992
    Date of Patent: December 14, 1993
    Assignee: Eropol Finance et Developpement
    Inventor: Olivier M. G. Sergent