Granted Patent
Utility
US 4,621,072 · App. 06/710,078
Process for preparing abrasion-resistant coated catalysts
Inventors:
Dietrich Arntz, Gunter Prescher, Werner Burkhardt, Johannes Heilos, Reinhard Manner
Patented Case
View Patent ↗
Granted: Nov 4, 1986
Filed: Feb 26, 1985
Inventors
Dietrich Arntz
Gunter Prescher
Werner Burkhardt
Johannes Heilos
Reinhard Manner
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.