Granted Patent
Utility
US 5,368,631 · App. 08/194,889
Desulfurization agent
Inventors:
W. Neil Rossborough, Harry E. Trout
Patented Case
View Patent ↗
Granted: Nov 29, 1994
Filed: Feb 14, 1994
Inventors
W. Neil Rossborough
Harry E. Trout
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.