Granted Patent
Utility
US 5,506,191 · App. 08/225,037
Heterocyclic hydrazines and hydrazones
Inventors:
Richard J. Anderson, Joe Timothy Bamberg, Michael M. Leippe
Patented Case
View Patent ↗
Granted: Apr 9, 1996
Filed: Apr 8, 1994
Inventors
Richard J. Anderson
Joe Timothy Bamberg
Michael M. Leippe
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.