Granted Patent
Utility
US 4,741,846 · App. 06/758,014
2,4,6-trifunctionalized phenols
Inventor:
Samuel Evans
Patented Case
View Patent ↗
Granted: May 3, 1988
Filed: Jul 24, 1985
Inventor
Samuel Evans
Assignee (at issue)
Ciba-Geigy
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.