Granted Patent
Utility
US 4,428,953 · App. 06/356,043
Pleuromutilin derivatives, their production and use
Inventors:
Heinz Berner, Friederike Turnowsky, Georg Laber, Johannes Hildebrandt
Patented Case
View Patent ↗
Granted: Jan 31, 1984
Filed: Mar 8, 1982
Inventors
Heinz Berner
Friederike Turnowsky
Georg Laber
Johannes Hildebrandt
Assignee (at issue)
Sandoz AG
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.