Granted Patent
Utility
US 4,533,755 · App. 06/558,788
Process for the hydroformylation of olefins
Inventors:
Boy Cornils, Josef Hibbel, Gunther Kessen, Werner Konkol, Bernhard Lieder, Ernst Wiebus, Heinz Kalbfell, Hanswilhelm Bach
Patented Case
View Patent ↗
Granted: Aug 6, 1985
Filed: Dec 7, 1983
Inventors
Boy Cornils
Josef Hibbel
Gunther Kessen
Werner Konkol
Bernhard Lieder
Ernst Wiebus
Heinz Kalbfell
Hanswilhelm Bach
Assignee (at issue)
Ruhrchemie 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.