Granted Patent
Utility
US 4,582,939 · App. 06/655,756
Mercaptan production
Inventors:
Edmund F. Perozzi, Andrew G. Papay
Patented Case
View Patent ↗
Granted: Apr 15, 1986
Filed: Oct 1, 1984
Inventors
Edmund F. Perozzi
Andrew G. Papay
Assignee (at issue)
Ethyl Petroleum Additives, Inc.
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.