Granted Patent
Utility
US 6,500,237 · App. 09/777,840
Removing hydrogen sulfide from a gaseous mixture using ferric ions bonded to calcined diatomite
Inventors:
Eric L. Winchester, Michael J. McMullin, Jeffrey K. Hum
Patented Case
View Patent ↗
Granted: Dec 31, 2002
Filed: Feb 7, 2001
Inventors
Eric L. Winchester
Michael J. McMullin
Jeffrey K. Hum
Assignee (at issue)
ADI 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.