Granted Patent
Utility
US 6,174,347 · App. 09/388,789
Basic tundish flux composition for steelmaking processes
Inventor:
Bruce J. Barker
Patented Case
View Patent ↗
Granted: Jan 16, 2001
Filed: Sep 2, 1999
Inventor
Bruce J. Barker
Assignee (at issue)
Performix Technologies, Ltd.
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.