Granted Patent
Utility
US 5,919,566 · App. 08/731,734
Inorganic support materials containing sulphonate and mercapto groups, process for the production thereof and use as catalyst
Inventors:
Hans Lansink-Rotgerink, Stefan Wieland, Emmanuel Auer
Patented Case
View Patent ↗
Granted: Jul 6, 1999
Filed: Oct 21, 1996
Inventors
Hans Lansink-Rotgerink
Stefan Wieland
Emmanuel Auer
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.