Granted Patent
Utility
US 6,579,971 · App. 09/937,312
Method of producing 3,4-dehydroprolines and 3,4-dehydropiperidines
Inventors:
Bernd Schafer, Günter Helmchen, Uli Kazmaier, Simone Schleich, Helmut Stahr, Volker Wolfart
Patented Case
View Patent ↗
Granted: Jun 17, 2003
Filed: Mar 12, 2002
Inventors
Bernd Schafer
Günter Helmchen
Uli Kazmaier
Simone Schleich
Helmut Stahr
Volker Wolfart
Assignee (at issue)
BASF SE
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.