Patents by Inventor Ibrahim S. Balbaa

Ibrahim S. Balbaa 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 processing ceramics using microwave oven with resistance heating unit
    Patent number: 5191183
    Abstract: An apparatus for calcining and/or sintering ceramic materials comprising a kiln having a heating chamber formed from a microwave impermeable material separated from abutting secondary chambers containing conventional heating means by perforated walls, permitting convectional/radiative heat transfer from the secondary chambers into the heating chamber while minimizing leakage of microwave radiation from the heating chamber. A method for processing ceramic materials in the apparatus comprises applying convectional or convectional/radiative heat to elevate the temperature of a material to increase microwave coupling, and then applying microwave radiation to further elevate the temperature of the material and maintain a desired temperature for a desired length of time.
    Type: Grant
    Filed: February 21, 1991
    Date of Patent: March 2, 1993
    Assignee: Ontario Hydro
    Inventors: Ibrahim S. Balbaa, Steven J. Oda