Granted Patent
Utility
US 4,941,909 · App. 07/334,952
Heterocyclic compounds
Inventors:
Jean Wenger, Paul Winternitz, Martin Zeller
Patented Case
View Patent ↗
Granted: Jul 17, 1990
Filed: Feb 14, 1989
Inventors
Jean Wenger
Paul Winternitz
Martin Zeller
Assignee (at issue)
HOFFMANN-LA ROCHE INC.
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.