Granted Patent
Utility
US 4,529,574 · App. 06/575,638
Process for the removal of sulfur oxide from a gas
Inventor:
Li Wang
Patented Case
View Patent ↗
Granted: Jul 16, 1985
Filed: Jan 30, 1984
Inventor
Li Wang
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.