Granted Patent
Utility
US 4,451,676 · App. 06/412,151
Chemical process for the preparation of para-alkenyl phenol
Inventor:
Charles R. Everly
Patented Case
View Patent ↗
Granted: May 29, 1984
Filed: Aug 27, 1982
Inventor
Charles R. Everly
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.