Granted Patent
Utility
US 6,651,899 · App. 09/878,584
Continuous casting nozzle with pressure modulator for improved liquid metal flow regulation
Inventors:
Dong Xu, Lawrence J. Heaslip, James D. Dorricott
Patented Case
View Patent ↗
Granted: Nov 25, 2003
Filed: Jun 11, 2001
Inventors
Dong Xu
Lawrence J. Heaslip
James D. Dorricott
Assignee (at issue)
VESUVIUS CRUCIBLE COMPANY
This patent predates the USPTO's electronic file wrapper — prosecution documents from this era exist only in the Patent Office's paper records. A certified copy of the file history can be ordered from the USPTO's paper archives.