Granted Patent
Utility
US 6,025,524 · App. 09/138,718
Single-stage process for the preparation of amines
Inventors:
Jurgen Herwig, Richard Fischer, Heinz Alexander, Burkhard Zimmermann, Matthias Beller
Patented Case
View Patent ↗
Granted: Feb 15, 2000
Filed: Aug 24, 1998
Inventors
Jurgen Herwig
Richard Fischer
Heinz Alexander
Burkhard Zimmermann
Matthias Beller
Assignee (at issue)
Hoechst Research & Technology Deutschland GmbH & Co. KG
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.