Granted Patent
Utility
US 6,093,815 · App. 09/043,330
Galanthamine derivatives and process for their preparation
Inventors:
David Andrew Chaplin, Neil Richard Fraser, Peter David Tiffin
Patented Case
View Patent ↗
Granted: Jul 25, 2000
Filed: Aug 20, 1998
Inventors
David Andrew Chaplin
Neil Richard Fraser
Peter David Tiffin
Assignee (at issue)
Janssen Pharmaceutica NV
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.