Granted Patent
Utility
US 4,804,774 · App. 07/177,151
Production of gem-disubstituted cyclohexadienones
Inventor:
G. Patrick Stahly
Patented Case
View Patent ↗
Granted: Feb 14, 1989
Filed: Apr 4, 1988
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.