Granted Patent
Utility
US 5,358,550 · App. 07/966,805
Desulfurization agent
Inventor:
W. Neil Rossborough
Patented Case
View Patent ↗
Granted: Oct 25, 1994
Filed: Oct 26, 1992
Inventor
W. Neil Rossborough
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.