Granted Patent
Utility
US 4,259,175 · App. 05/949,755
Process for reducing sox emissions from catalytic cracking units
Inventor:
Dennis P. McArthur
Patented Case
View Patent ↗
Granted: Mar 31, 1981
Filed: Oct 10, 1978
Inventor
Dennis P. McArthur
Assignee (at issue)
Union Oil Company of California
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.