Granted Patent
Utility
US 4,256,713 · App. 06/071,216
Flue gas treatment with intermittent addition of alkaline reagent to scrubbing liquor
Inventor:
Peter Urban
Patented Case
View Patent ↗
Granted: Mar 17, 1981
Filed: Aug 30, 1979
Inventor
Peter Urban
Assignee (at issue)
UOP LLC
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.