Patents by Inventor Luc Desrosiers

Luc Desrosiers 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).

  • Forsterite and its use as insulating material
    Patent number: 4985164
    Abstract: The present invention relates to a fibrous-like synthetic forsterite obtained by the calcination of chrysotile asbestos fiber at a temperature of from 650.degree. to 1450.degree. C., said synthetic forsterite being characterized by having an MgO:SiO.sub.2 ratio lower than 1.1, a raw loose density of from 3 to 40 pcf, a thermal conductivity "k" factor of from 0.25 to 0.40 BTU. In/Hr. .degree. F. Ft.sup.2 and a fusion point of from 1600.degree. to 1700.degree. C. which is useful as an insulating material.
    Type: Grant
    Filed: September 16, 1988
    Date of Patent: January 15, 1991
    Assignee: Ceram-Sna Inc.
    Inventors: Pierre Delvaux, Luc Desrosiers, Marcel Gouin
  • Foundry sands derived from serpentine and foundry molds derived therefrom
    Patent number: 4604140
    Abstract: There is disclosed a granular product suitable for use as foundry sands and obtained from asbestos tailings calcined at a temperature of from 1250.degree. to 1450.degree. C., said asbestos tailings having an MgO:SiO.sub.2 ratio greater than 1.0, the granules constituting the granular product being characterized by having a thermal expansion at 1000.degree. C. of not more than 1.0% and a particle size of between -20 to +200 mesh (Tyler), the granules being further characterized by being made up mainly of particles of enstatite bonded by gruenerite and fayalite, and substantially unreactive to basic oxides present in the cast metal.
    Type: Grant
    Filed: April 26, 1984
    Date of Patent: August 5, 1986
    Assignee: Societe Nationale de l'Amiante
    Inventors: Jean M. Lalancette, Jean P. Chevalier-Bultel, Luc Desrosiers