Patents by Inventor Jacques, M. L. Guigonis

Jacques, M. L. Guigonis 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).

  • Mixture of grains and particles of vitreous silica, and new material made of sintered vitreous silica
    Patent number: 5389591
    Abstract: The invention relates especially to a mixture of grains and particles of fused vitreous silica produced by dry mixing: (i) a moderately coarse particle size fraction of fused vitreous silica, (ii) a fine particle size fraction of fused vitreous silica, in which at least 95% by weight of the grains are smaller than 40 .mu.m, (iii) substantially spherical particles of fume silica, and (iv) optionally, at least one particle size fraction of fused vitreous silica which is coarser than fraction (i), the constituents (i) to (iv) being employed in the following proportions by weight: (i) 15-70%, (ii) 15-55%, (iii) 3-15% and (iv) 0-52%. The mixture can be used for the production of articles made of sintered vitreous silica.
    Type: Grant
    Filed: May 20, 1993
    Date of Patent: February 14, 1995
    Assignee: Societe Europeenne des Produits Refractaires
    Inventors: Jacques, M. L. Guigonis, Eric T. G. Jorge