Granted Patent
Utility
US 6,685,896 · App. 10/181,393
Method for recovering rhodium from reaction products of oxosynthesis
Inventors:
Hans Bohnen, Richard Fischer, Mark Hewlett, Wolfgang Zgorzelski, Norbert Schopper
Patented Case
View Patent ↗
Granted: Feb 3, 2004
Filed: Sep 5, 2002
Inventors
Hans Bohnen
Richard Fischer
Mark Hewlett
Wolfgang Zgorzelski
Norbert Schopper
Assignee (at issue)
CELANESE CHEMICALS EUROPE 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.