Granted Patent
Utility
US 4,824,830 · App. 07/070,685
6- or 7-methylenandrosta-1,4-diene-3,17-dione derivatives and process for their preparation
Inventors:
Franco Buzzetti, Natale Barbugian, Paolo Lombardi, Enrico di Salle
Patented Case
View Patent ↗
Granted: Apr 25, 1989
Filed: Jul 7, 1987
Inventors
Franco Buzzetti
Natale Barbugian
Paolo Lombardi
Enrico di Salle
Assignee (at issue)
Farmitalia Carlo Erba 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.