Granted Patent
Utility
US 5,329,040 · App. 07/871,341
Process for the continuous preparation of aminoaryl or aminoalkyl .beta.-sulfatoethyl sulfones
Inventors:
Lothar Schmitt, Rudiger Berthold
Patented Case
View Patent ↗
Granted: Jul 12, 1994
Filed: Apr 21, 1992
Inventors
Lothar Schmitt
Rudiger Berthold
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.