Patents by Inventor Alain Dubuisson

Alain Dubuisson 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: 5075405
    Abstract: Mixtures of reactive thermosetting resins which are stable at ambient temperature, latent catalyst complexes for hardening said mixtures, processes for their manufacture, and heat-hardened resins obtained from said mixtures. Mixtures of heat-reactive thermosetting resins which are stable at ambient temperature for use in impregnating insulation for electrical materials or in the preparation of molding products or composite materials, comprising liquid oligo- or poly-isocyanate compounds and liquid epoxy resins and a latent hardening catalyst which is inert at ambient temperature and is composed of an addition complex of an amine compound from the group consisting of the amines, the alkylhydrazines and the imidazoles, and a boron halide. They additionally comprise a small quantity of maleic anhydride or the boron halide is boron tribromide with no addition of maleic anhydride. Latent catalyst complexes of these mixtures, formed by the addition complexes of BBr.sub.
    Type: Grant
    Filed: September 13, 1989
    Date of Patent: December 24, 1991
    Assignee: GEC Alsthom, SA
    Inventors: Jean Atchekzai, Bernard Bonnetot, Bernard Frange, Henri Mongeot, Alain Anton, Alain Dubuisson
  • Patent number: 4748048
    Abstract: A method of insulating electrical conductors wherein a tape of porous mica paper and of glass felt or cloth or plastic material film is wound round the conductors, wherein the tape is impregnated with a varnish comprising a polymerizable liquid resin, and wherein the impregnated tape is polymerized by heat treatment, the method including the improvement whereby an adhesive powder is initially added to the tape to provide adhesion between the porous mica paper and the glass felt or cloth or the plastic material film, said adhesive powder comprising a polymer having chains of oxazolidone groups containing groups with epoxy terminations, and whereby the polymerizable liquid resin of the varnish essentially contains isocyanate groups which are transformed into isocyanurate groups during polymerization.
    Type: Grant
    Filed: October 20, 1986
    Date of Patent: May 31, 1988
    Assignee: Alsthom, S.A.
    Inventors: Alain Anton, Alain Dubuisson