Granted Patent
Utility
US 5,801,291 · App. 08/813,877
Process for the preparation of aldehydes by means of a catalyst system comprising rhodium and substituted diphenyldiphospines
Inventors:
Helmut Bahrmann, Hans-Jerg Kleiner, Dieter Regnat
Patented Case
View Patent ↗
Granted: Sep 1, 1998
Filed: Mar 7, 1997
Inventors
Helmut Bahrmann
Hans-Jerg Kleiner
Dieter Regnat
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.