Granted Patent
Utility
US 5,162,577 · App. 07/649,089
Process for lithiation of 1,3-bis(trifluoromethyl)benzene
Inventor:
Raffaello Masciadri
Patented Case
View Patent ↗
Granted: Nov 10, 1992
Filed: Feb 1, 1991
Inventor
Raffaello Masciadri
Assignee (at issue)
HOFFMANN-LA ROCHE INC.
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.