Granted Patent
Utility
US 5,654,467 · App. 08/495,474
Process for the production of C-substituted diethylenetriamines
Inventors:
Orlin Petrov, Jean-Claude Hilscher, Klaus Nickisch, Heribert Schmitt-Willich, Heinz Gries, Bernd Raduchel, Johannes Platzek
Patented Case
View Patent ↗
Granted: Aug 5, 1997
Filed: Oct 12, 1995
Inventors
Orlin Petrov
Jean-Claude Hilscher
Klaus Nickisch
Heribert Schmitt-Willich
Heinz Gries
Bernd Raduchel
Johannes Platzek
Assignee (at issue)
SCHERING CORPORATION
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.