Granted Patent
Utility
US 5,952,206 · App. 09/222,350
Process for preparing L-aspartic acid
Inventors:
Karl-Heinz Giselbrecht, Josef Schaller
Patented Case
View Patent ↗
Granted: Sep 14, 1999
Filed: Dec 29, 1998
Inventors
Karl-Heinz Giselbrecht
Josef Schaller
Assignee (at issue)
DSM Fine Chemicals Austria GmbH
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.