Granted Patent
Utility
US 4,655,879 · App. 06/664,902
Glycerol distillation process
Inventors:
Rolf Brockmann, Lutz Jeromin, Wilhelm Johannisbauer, Helmut Meyer, Otto Michel, Juergen Plachenka
Patented Case
View Patent ↗
Granted: Apr 7, 1987
Filed: Oct 26, 1984
Inventors
Rolf Brockmann
Lutz Jeromin
Wilhelm Johannisbauer
Helmut Meyer
Otto Michel
Juergen Plachenka
Assignee (at issue)
Henkel Kommanditgesellschaft auf Aktien
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.