Patents by Inventor Gerard M. Cullan

Gerard M. Cullan 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).

  • Dense lining for coreless induction furnace
    Patent number: 5495495
    Abstract: This invention relates to a refractory lining for use in a coreless induction furnace having a refractory crucible, wherein the refractory lining lines the inner surface of the refractory crucible and has a porosity of between 0.2% and 1%.
    Type: Grant
    Filed: May 25, 1995
    Date of Patent: February 27, 1996
    Assignee: Saint-Gobain/Norton Industrial Ceramics Corporation
    Inventor: Gerard M. Cullan
  • Inductor loop coating
    Patent number: 5134629
    Abstract: A high frequency core and coil electric metal melting furnace is shown. This furnace has a lined channel in its inductor for carrying the molten metal. The invention provides an improved inductor for a core and coil furnace that is not subject to leakage of the molten metal from the channel into the rammed refractory support bed for the channel which leakage otherwise shortens the lift of the furnace. Also a method of lining the channel in the inductor for carrying the molten metal which forms the core is disclosed.
    Type: Grant
    Filed: February 8, 1990
    Date of Patent: July 28, 1992
    Assignee: Norton Company
    Inventor: Gerard M. Cullan