Granted Patent
Utility
US 5,210,297 · App. 07/814,640
Workup of mother liquors resulting from the preparation of adipic acid
Inventors:
Gerhard Frank, Guenter Herrmann, Gert Buerger, Jost H. Manegold, Stefan Karbach, Ruediger Schmitz
Patented Case
View Patent ↗
Granted: May 11, 1993
Filed: Dec 30, 1991
Inventors
Gerhard Frank
Guenter Herrmann
Gert Buerger
Jost H. Manegold
Stefan Karbach
Ruediger Schmitz
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.