Patents by Inventor Ahmed A. Elkachouty

Ahmed A. Elkachouty 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).

  • Colloidal silica water based slurry system for investment casting shell backup coats
    Patent number: 4996084
    Abstract: A water based slurry for use as backup coat on a wax model has colloidal silica and milled zircon as primary ingredients. The slurry is utilized as a backup coat on a wax model used in a lost wax investment casting technique. The slurry comprises of colloidal silica, a latex glue, ammonium alginate, a wetting agent, milled zircon, tabular alumina, glass rock and an anti-foaming agent.
    Type: Grant
    Filed: June 30, 1989
    Date of Patent: February 26, 1991
    Assignee: Pfizer Hospital Products Group, Inc.
    Inventor: Ahmed A. Elkachouty