Patents by Inventor Charles E. Frost, Jr.

Charles E. Frost, Jr. 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).

  • Apparatus for making quartz glass crucibles
    Patent number: 4963178
    Abstract: A flat-bottomed quartz glass crucible for the manufacture of monocrystalline silicon is made by disposing granular quartz particles on a flat base in a cylindrical mold. A vacuum is drawn on the particles through vacuum holes in the base to retain the particles on the base while the base and mold are rotated, and while the particles are heated to fuse them into a quartz glass crucible shape.
    Type: Grant
    Filed: October 2, 1989
    Date of Patent: October 16, 1990
    Assignee: GTE Products Corporation
    Inventors: David R. Brown, Charles E. Frost, Jr., Kenneth A. White
  • Quartz glass crucibles
    Patent number: 4713104
    Abstract: A flat-bottomed quartz glass crucible for the manufacture of monocrystalline silicon is made by disposing granular quartz particles on a flat base in a cylindrical mold. A vacuum is drawn on the particles through vacuum holes in the base to retain the particles thereon while the base and mold are rotated, and while the particles are heated to fuse them into a quartz glass crucible shape.
    Type: Grant
    Filed: March 31, 1986
    Date of Patent: December 15, 1987
    Assignee: GTE Products Corporation
    Inventors: David R. Brown, Charles E. Frost, Jr., Kenneth A. White
  • Method of manufacturing quartz glass crucibles with low bubble content
    Patent number: 4632686
    Abstract: In the manufacture of a quartz glass crucible of low bubble content, a first layer of granular quartz material is disposed on the interior of a rotating mold through the walls of which a vacuum can be drawn. A second layer of finer quartz material is then disposed on the first layer. The quartz material is then heated, melted and fused to form a crucible.
    Type: Grant
    Filed: February 24, 1986
    Date of Patent: December 30, 1986
    Assignee: GTE Products Corporation
    Inventors: David R. Brown, Charles E. Frost, Jr., Kenneth A. White