Granted Patent
Utility
US 5,756,854 · App. 08/701,775
Process for the hydroformylation of olefinically unsaturated compounds
Inventors:
Helmut Bahrmann, Peter Lappe, Bernhard Fell, Zhigao Xia, Subba Kanagasabapathy
Patented Case
View Patent ↗
Granted: May 26, 1998
Filed: Aug 26, 1996
Inventors
Helmut Bahrmann
Peter Lappe
Bernhard Fell
Zhigao Xia
Subba Kanagasabapathy
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.