Granted Patent
Utility
US 5,693,852 · App. 08/597,884
Process for the preparation of o-acyloxycarboxanilides
Inventors:
Andreas Dierdorf, Theodor Papenfuhs, Siegfried Planker
Patented Case
View Patent ↗
Granted: Dec 2, 1997
Filed: Feb 7, 1996
Inventors
Andreas Dierdorf
Theodor Papenfuhs
Siegfried Planker
Assignee (at issue)
Hoechst 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.