Granted Patent
Utility
US 6,474,398 · App. 09/498,220
Apparatus for introducing granular mold flux onto the top of a slab being cast within a continuous casting mold
Inventors:
Frank Schoner, Michael ZINNI
Patented Case
View Patent ↗
Granted: Nov 5, 2002
Filed: Feb 4, 2000
Inventors
Frank Schoner
Michael ZINNI
Assignee (at issue)
STOLLBERG, INC.
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.