Patents Assigned to Saint Gobain/Norton Industrial Ceramics Corp.
  • Borosilicate glass
    Patent number: 5480846
    Abstract: This invention is directed to a novel borosilicate glass for use in glass hipping consisting essentially of:a) boron oxide,b) silica,c) between about 2 w/o and about 6 w/o K.sub.2 O,d) less than about 1 w/o Na.sub.2 O, ande) between about 3.6 w/o and about 5.4 w/o magnesia.
    Type: Grant
    Filed: April 21, 1995
    Date of Patent: January 2, 1996
    Assignee: Saint-Gobain/Norton Industrial Ceramics Corp.
    Inventors: Glenn Sundberg, Russell Yeckley
  • Molding shaped articles
    Patent number: 5409645
    Abstract: Shaped ceramic articles can be obtained by forcing a ceramic precursor gel into a belt provided with apertures corresponding to the shapes of the desired articles, freezing the gel in the apertures so that they can be removed without losing structural integrity and then removing the frozen articles from the belt and drying and firing them to produce the desired shaped ceramic articles.
    Type: Grant
    Filed: December 20, 1993
    Date of Patent: April 25, 1995
    Assignee: Saint Gobain/Norton Industrial Ceramics Corp.
    Inventors: Earl R. Torre, Jr., Michael D. Kavanaugh
  • Process for the preparation of ceramic flakes, fibers, and grains from ceramic sols
    Patent number: 5312791
    Abstract: A process for producing ceramic flake, fiber and grain materials comprising solidifying a hydrated alumina sol, freeze drying the solidified sol and thereafter sintering the freeze dried material is disclosed. Novel ribbed flake material made by the process of the present invention is also disclosed.
    Type: Grant
    Filed: August 21, 1992
    Date of Patent: May 17, 1994
    Assignee: Saint Gobain/Norton Industrial Ceramics Corp.
    Inventors: William S. Coblenz, Michael D. Kavanaugh
  • Polishing material
    Patent number: 5300130
    Abstract: A novel polishing slurry for particularly hard materials such a silicon carbide has been found. The slurry comprises diamond particles with a median particle size of around a micron and alpha alumina particles with a median size of from about 20 to about 200 nanometers.
    Type: Grant
    Filed: July 26, 1993
    Date of Patent: April 5, 1994
    Assignee: Saint Gobain/Norton Industrial Ceramics Corp.
    Inventor: David Rostoker