Granted Patent
Utility
US 4,234,547 · App. 06/036,932
Flue gas treatment
Inventor:
Peter Urban
Patented Case
View Patent ↗
Granted: Nov 18, 1980
Filed: May 7, 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.