Granted Patent
Utility
US 5,227,527 · App. 07/896,322
Process for the preparation of 3'-aminopropyl 2-chloroethyl sulfone semisulfate
Inventors:
Heinrich Angenendt, Michael Meier
Patented Case
View Patent ↗
Granted: Jul 13, 1993
Filed: Jun 10, 1992
Inventors
Heinrich Angenendt
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.