Granted Patent
Utility
US 6,221,325 · App. 09/149,211
Process for controlling ammonia slip in the reduction of sulfur dioxide emission
Inventors:
Gregory N. Brown, Michael L. Mengel
Patented Case
View Patent ↗
Granted: Apr 24, 2001
Filed: Sep 8, 1998
Inventors
Gregory N. Brown
Michael L. Mengel
Assignee (at issue)
Marsulex Environmental Technologies 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.