Patents by Inventor Stephen John Lee

Stephen John Lee 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).

  • Stopper body
    Patent number: 8173081
    Abstract: A stopper body of refractory material and cylindrical shape having a first end (10), a second end (14) and an intermediate zone (12) there between, with a bore (16) of circular cross section, extending from said first end (10) in an axial direction of the stopper body into said intermediate zone (12) towards the second end (14), wherein the said bore being provided with an enlarged cross section (at 16s) along at least part of said intermediate Zone (12).
    Type: Grant
    Filed: October 31, 2009
    Date of Patent: May 8, 2012
    Assignee: Refractory Intellectual Property GmbH & Co. KG
    Inventors: Stephen John Lee, Stuart Alexander William Mungall, Derek James Chalmers
  • STOPPER BODY
    Publication number: 20110200502
    Abstract: A stopper body of refractory material and cylindrical shape having a first end (10), a second end (14) and an intermediate zone (12) there between, with a bore (16) of circular cross section, extending from said first end (10) in an axial direction of the stopper body into said intermediate zone (12) towards the second end (14), wherein the said bore being provided with an enlarged cross section (at 16s) along at least part of said intermediate Zone (12).
    Type: Application
    Filed: October 31, 2009
    Publication date: August 18, 2011
    Applicant: REFRACTORY INTELLECTUAL PROPERTY GMBH & CO. KG
    Inventors: Stephen John Lee, Stuart Alexander William Mungall, Derek James Chalmers
  • Refractory product
    Patent number: 6409056
    Abstract: A refractory shroud device having an internal bore for through passage of molten metal, said device comprising, a body defining at least a portion of said bore, and having sufficient length to allow an end thereof to become immersed under normal operational conditions, and operationally engageable with said end a replaceable segment defining outlet means in flow communication with said bore, the said component having an internal profile adapted to provide a predetermined control over the flow of molten metal from the device.
    Type: Grant
    Filed: March 17, 2000
    Date of Patent: June 25, 2002
    Assignee: Didier-Werke AG
    Inventor: Stephen John Lee