Granted Patent
Utility
US 6,805,550 · App. 10/416,852
Method of operating a furnace
Inventors:
Michael Hilton, John Wilson Kippax
Patented Case
View Patent ↗
Granted: Oct 19, 2004
Filed: May 16, 2003
Inventors
Michael Hilton
John Wilson Kippax
Assignee (at issue)
Davy Process Technology Limited
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.