Granted Patent
Utility
US 4,994,580 · App. 07/426,994
Producing bis (alicyclic) thioethers
Inventor:
G. Patrick Stahly
Patented Case
View Patent ↗
Granted: Feb 19, 1991
Filed: Oct 26, 1989
Inventor
G. Patrick Stahly
Assignee (at issue)
Ethyl Corporation
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.