Granted Patent
Utility
US 5,264,600 · App. 07/855,731
Process for the recovery of rhodium from residues of the distillation of products of the oxo synthesis
Inventors:
Peter Lappe, Helmut Springer
Patented Case
View Patent ↗
Granted: Nov 23, 1993
Filed: Mar 20, 1992
Inventors
Peter Lappe
Helmut Springer
Assignee (at issue)
Hoechst GmbH
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.