Granted Patent
Utility
US 6,656,902 · App. 09/741,867
Chromatographic separation of enantiomers of bicyclic lactams
Inventors:
Kurt Guenther, Stefan Merget, Karlheinz Drauz, Hans-Peter Krimmer
Patented Case
View Patent ↗
Granted: Dec 2, 2003
Filed: Dec 22, 2000
Inventors
Kurt Guenther
Stefan Merget
Karlheinz Drauz
Hans-Peter Krimmer
Assignee (at issue)
Degussa 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.