Granted Patent
Utility
US 5,557,005 · App. 08/449,251
Process for preparing 3-chloroanthranilic alkyl esters of high purity from 3-chloroanthranilic acid
Inventors:
G unther Semler, Michael Meier
Patented Case
View Patent ↗
Granted: Sep 17, 1996
Filed: May 24, 1995
Inventors
G unther Semler
Michael Meier
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.