Patents by Inventor Jed L. Dulberg

Jed L. Dulberg 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).

  • Molten aluminum resistant refractory composition containing ceramic fibers
    Patent number: 5039634
    Abstract: A ceramic fiber containing refractory moldable composition suitable for use with molten aluminum alloys, the composition comprised of 10-20 wt. % ceramic fiber, 30.5-45 wt. % colloidal silica, 30-45 wt. % total content of liquid carrier, 0.5-5 wt. % organic polymer and 1-25 wt. % barium sulfate. The composition has a high level of resistance to attack or penetration by molten aluminum.
    Type: Grant
    Filed: June 4, 1990
    Date of Patent: August 13, 1991
    Assignee: Aluminum Company of America
    Inventors: Jed L. Dulberg, John K. Steelman, Timothy K. Myers
  • Molten aluminum resistant refractory composition containing ceramic fibers
    Patent number: 4992395
    Abstract: A ceramic fiber containing refractory moldable composition suitable for use with molten aluminum alloys, the composition comprised of 10-18 wt. % ceramic fiber, 33-45 wt. % colloidal silica, 30-42 wt. % total content of liquid carrier, 0.2-2.5 wt. % organic polymer and 1-15 wt. % barium sulfate. The composition has a high level of resistance to attack or penetration by molten aluminum.
    Type: Grant
    Filed: April 28, 1989
    Date of Patent: February 12, 1991
    Assignee: Aluminum Company of America
    Inventors: Jed L. Dulberg, John K. Steelman, Timothy K. Myers