Patents by Inventor Liam Cullen

Liam Cullen 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).

  • Metallurgical pouring vessels
    Patent number: 5374036
    Abstract: A method and product improve the positioning of loose anti-skulling material in the outlet nozzle zone of a metallurgical pouring vessel. The formation of skull in the outlet nozzle zone of a metallurgical pouring vessel is inhibited by positioning in the outlet nozzle zone an elongated container containing loose anti-skulling material, the container being formed of an intumescent material so that when heated it expands to fill the gap between itself and the walls of the nozzle and releases the anti-skulling material.
    Type: Grant
    Filed: October 5, 1993
    Date of Patent: December 20, 1994
    Assignee: Foseco International Limited
    Inventors: Norman E. Rogers, Liam Cullen