Granted Patent
Utility
US 6,383,249 · App. 09/877,388
Magnesium desulfurization agent
Inventors:
Thomas H. Bieniosek, Gerald R. Zebrowski
Patented Case
View Patent ↗
Granted: May 7, 2002
Filed: Jun 11, 2001
Inventors
Thomas H. Bieniosek
Gerald R. Zebrowski
Assignee (at issue)
Rossborough Manufacturing Co., L.P.
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.