Granted Patent
Utility
US 6,214,212 · App. 09/078,749
Method for removal of hydrogen sulfide from gaseous and liquid streams by catalytic carbon
Inventors:
Neal Megonnell, Robert H. Vaughn
Patented Case
View Patent ↗
Granted: Apr 10, 2001
Filed: May 14, 1998
Inventors
Neal Megonnell
Robert H. Vaughn
Assignee (at issue)
CALGON CARBON CORPORATION
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.