Granted Patent
Utility
US 6,124,472 · App. 09/230,321
Process for preparing 3-pyrroline-2-carboxylic acid derivatives
Inventors:
Helmut Mack, Thomas Pfeiffer, Werner Seitz, Thomas Zierke, Friedhelm Balkenhohl, Udo Lange
Patented Case
View Patent ↗
Granted: Sep 26, 2000
Filed: Jan 22, 1999
Inventors
Helmut Mack
Thomas Pfeiffer
Werner Seitz
Thomas Zierke
Friedhelm Balkenhohl
Udo Lange
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.