Granted Patent
Utility
US 6,416,729 · App. 09/503,898
Process for removing hydrogen sulfide from gas streams which include or are supplemented with sulfur dioxide
Inventors:
David W. DeBerry, Dennis Dalrymple
Patented Case
View Patent ↗
Granted: Jul 9, 2002
Filed: Feb 15, 2000
Inventors
David W. DeBerry
Dennis Dalrymple
Assignee (at issue)
CrystaTech, 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.