Patents by Inventor Patrice Dourthe

Patrice Dourthe 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).

  • Compositions of maleic resins that can be set by ionization and their use in the manufacture of composite materials with fibrous reinforcement
    Patent number: 5886063
    Abstract: The invention relates to compositions of ionization-setting maleic resins and their use for manufacture of composite materials with a fibrous reinforcement. These compositions comprise a maleic resin and a reactive diluent made up of at lest one compound chosen from among dipentaerythritol pentacrylate and hydroxyethyl methacrylate, the total quantity of reactive diluent being between 10 and 70 parts by weight per 100 parts by weight of maleic resin. They may also comprise a plasticizer such as bis-allylic resin. With these compositions it is possible to obtain composite materials set by ionization without additional post heat treatment.
    Type: Grant
    Filed: February 27, 1997
    Date of Patent: March 23, 1999
    Assignee: Aerospatiale Societe Nationale Industrielle
    Inventors: Frederic Alexandre Lionel Boursereau, Patrice Dourthe
  • Process for the hardening under ionizing radiation of a bis-maleimide resin and a composite material using said resin
    Patent number: 5585417
    Abstract: Process for the hardening, curing or setting of a bis-maleimide resin and a composite material using said resin.The setting process according to the invention of a basic resin A having at least one bis-maleimide monomer consists of adding to the basic resin A, prior to the use thereof, at least one reactive diluent B consisting of a monomer having a copolymerizable vinyl termination with the basic resin A when subjecting the mixture of the basic resin A and the diluent B to the action of ionizing radiation (34), the total quantity of the diluent B being such that the maleimide functions of the basic resin A are consumed following the ionizing radiation action and being chosen in the range 10 to 50 parts by weight for 100 parts by weight of the basic resin A. This resin is more particularly intended for the production of a composite material (16, 18) having a fibrous reinforcement (26, 28, 30, 32) by filamentary winding.
    Type: Grant
    Filed: April 4, 1996
    Date of Patent: December 17, 1996
    Assignee: Aerospatiale Societe Nationale Industrielle
    Inventors: Daniele Beziers, Yves Camberlin, Evelyne Chataignier, Patrice Dourthe
  • Prepolymers having imide groups
    Patent number: 5403907
    Abstract: Prepolymers having imide groupings and process for their preparation, for use in the production of resins capable of hardening under ionizing radiation. The prepolymers are derived from the reaction in a homogeneous liquid medium, at a temperature of between 50.degree. and 250.degree. C. of, firstly, imide grouping-generating reagents consisting of a least two specific maleimides of different kinds, and, secondly, two additional reagents, composed of a specific acrylate reagent and a specific vinyl compound other that an acrylate.
    Type: Grant
    Filed: August 11, 1993
    Date of Patent: April 4, 1995
    Assignee: Ciba-Geigy Corporation
    Inventors: Daniel Beziers, Yves Camberlin, Evelyne Chataignier, Patrice Dourthe
  • Mandrel for manufacturing a hollow composite material body
    Patent number: 5282734
    Abstract: A mandrel for manufacturing a hollow composite material body. The mandrel is formed by a homogeneous graphite felt block whose fibers are embedded in a pyrolysis carbon matrix. The densification of the arrangement of fibers forming the hollow body is carried out in a neutral atmosphere.
    Type: Grant
    Filed: July 20, 1992
    Date of Patent: February 1, 1994
    Assignee: Aerospatiale Societe Nationale Industrielle
    Inventors: Nicole Pastureau, Patrice Dourthe
  • Method of forming a mandrel
    Patent number: 5173332
    Abstract: A mandrel for manufacturing a hollow composite material body. The mandrel is formed by an homogeneous graphite felt block whose fibers are embedded in a pyrolysis carbon matrix. The densification of the arrangement of fibers forming the hollow body is carried out in a neutral atmosphere.
    Type: Grant
    Filed: May 3, 1991
    Date of Patent: December 22, 1992
    Assignee: Aerospatiale Societe Nationale Industrielle
    Inventors: Nicole Pastureau, Patrice Dourthe