Granted Patent
Utility
US 4,840,943 · App. 07/061,663
Androst-4-ene-3,17-diones and process for their preparation
Inventors:
Franco Buzzetti, Enrico di Salle, Paolo Lombardi
Patented Case
View Patent ↗
Granted: Jun 20, 1989
Filed: Jun 15, 1987
Inventors
Franco Buzzetti
Enrico di Salle
Paolo Lombardi
Assignee (at issue)
Farmitalia Carlo Ebra S.r.l.
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.