Granted Patent
Utility
US 5,403,566 · App. 08/243,535
Recovery of hydrogenation catalysts from solutions of hydrogenated nitrile rubber
Inventors:
Peter Panster, Stefan Wieland, Hartmuth Buding, Werner Obrecht
Patented Case
View Patent ↗
Granted: Apr 4, 1995
Filed: May 13, 1994
Inventors
Peter Panster
Stefan Wieland
Hartmuth Buding
Werner Obrecht
Assignee (at issue)
Bayer Aktiengesellschaft
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.