Granted Patent
Utility
US 5,208,376 · App. 07/856,063
Process for the continuous preparation of 3,3'-dichloro-benzidine dihydrochloride
Inventors:
Kurt Habig, Konrad Baessler, Klaus Warning
Patented Case
View Patent ↗
Granted: May 4, 1993
Filed: Jun 8, 1992
Inventors
Kurt Habig
Konrad Baessler
Klaus Warning
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.