Granted Patent
Utility
US 5,233,083 · App. 07/929,722
Process for the preparation of 2-amino-3-chlorobenzoic acid
Inventors:
Theodor Papenfuhs, Jochen Rapp
Patented Case
View Patent ↗
Granted: Aug 3, 1993
Filed: Aug 13, 1992
Inventors
Theodor Papenfuhs
Jochen Rapp
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.