Granted Patent
Utility
US 5,936,109 · App. 08/893,105
Ligands for asymmetric catalysis
Inventor:
Ulrich Berens
Patented Case
View Patent ↗
Granted: Aug 10, 1999
Filed: Jul 15, 1997
Inventor
Ulrich Berens
Assignee (at issue)
Chirotech Technology Limited
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.