Granted Patent
Utility
US 6,794,331 · App. 10/266,588
Raney copper
Inventors:
Daniel Ostgard, Jorg Sauer, Andreas Freund, Monika Berweiler, Matthias Hopp, Rudolf Vanheertum, Walther Girke
Patented Case
View Patent ↗
Granted: Sep 21, 2004
Filed: Oct 9, 2002
Inventors
Daniel Ostgard
Jorg Sauer
Andreas Freund
Monika Berweiler
Matthias Hopp
Rudolf Vanheertum
Walther Girke
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.