Granted Patent
Utility
US 6,133,497 · App. 08/930,473
Catalyst for removing olefins from aromatic compounds or mixtures thereof
Inventors:
Reinhard Hahn, Thomas Engelhardt, Uwe Flessner, Werner Zschau
Patented Case
View Patent ↗
Granted: Oct 17, 2000
Filed: Jan 7, 1998
Inventors
Reinhard Hahn
Thomas Engelhardt
Uwe Flessner
Werner Zschau
Assignee (at issue)
Sud-Chemie A.G.
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.