Granted Patent
Utility
US 6,342,086 · App. 09/251,193
Method and apparatus for improved EAF steelmaking
Inventor:
Valery Shver
Patented Case
View Patent ↗
Granted: Jan 29, 2002
Filed: Feb 16, 1999
Inventor
Valery Shver
Assignee (at issue)
Process Technology International, 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.