Granted Patent
Utility
US 4,538,008 · App. 06/602,302
Preparation of ortho-alkylated phenols
Inventors:
Bruce E. Firth, Terry J. Rosen
Patented Case
View Patent ↗
Granted: Aug 27, 1985
Filed: Apr 20, 1984
Inventors
Bruce E. Firth
Terry J. Rosen
Assignee (at issue)
UOP LLC
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.