Patents by Inventor Francis A. Jurnak

Francis A. Jurnak 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).

  • Method of forming ceramic igniters
    Patent number: 5785911
    Abstract: A method for forming thin green ceramic igniter shapes having a thickness characterized by a tolerance of no more than about +/-0.001 inch includes providing an apparatus having a porous mold having a well which defines a pair of opposing porous walls, and a plurality of vertical dividers positioned in the well in substantially parallel, substantially spaced relation where each divider contacting each opposing wall to define a plurality of compartments. A ceramic slip formed from a ceramic powder and a liquid carrier is poured into the compartments of the apparatus, dewatered through the opposing porous walls to form a plurality of green ceramic igniter shapes. The plurality of green ceramic igniter shapes are removed from the plurality of compartments.
    Type: Grant
    Filed: June 7, 1995
    Date of Patent: July 28, 1998
    Assignee: Saint-Gobain/Norton Industrial Ceramics Corp.
    Inventors: Craig A. Willkens, Normand P. Arsenault, Francis A. Jurnak