Granted Patent
Utility
US 5,340,895 · App. 08/043,604
Formed, polymeric transition-metal complex catalysts with organosiloxane diphenylphosphine ligands
Inventors:
Peter Panster, Robert Gradl, Peter Kleinschmit
Patented Case
View Patent ↗
Granted: Aug 23, 1994
Filed: Apr 5, 1993
Inventors
Peter Panster
Robert Gradl
Peter Kleinschmit
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.