Granted Patent
Utility
US 6,316,381 · App. 08/895,204
Multimetallic catalyst and process for preparing substituted aromatic amines
Inventors:
Emmanuel Auer, Andreas Freund, Michael Gross, Rolf Hartung
Patented Case
View Patent ↗
Granted: Nov 13, 2001
Filed: Jul 16, 1997
Inventors
Emmanuel Auer
Andreas Freund
Michael Gross
Rolf Hartung
Assignee (at issue)
Degussa AG
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.