Granted Patent
Utility
US 5,352,671 · App. 07/697,864
Heteroatoms-containing tricyclic compounds
Inventors:
Karl Baumann, Gerhart Emmer
Patented Case
View Patent ↗
Granted: Oct 4, 1994
Filed: May 9, 1991
Inventors
Karl Baumann
Gerhart Emmer
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.