Granted Patent
Utility
US 4,622,213 · App. 06/773,686
Sulfur dioxide removal from gas streams
Inventors:
Peter Urban, Edward A. Ginger
Patented Case
View Patent ↗
Granted: Nov 11, 1986
Filed: Sep 9, 1985
Inventors
Peter Urban
Edward A. Ginger
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.