Granted Patent
Utility
US 6,683,118 · App. 10/129,249
Method for hydroformylating olefinically unsaturated compounds
Inventor:
Wolfgang Hofs
Patented Case
View Patent ↗
Granted: Jan 27, 2004
Filed: Apr 30, 2002
Inventor
Wolfgang Hofs
Assignee (at issue)
CELANESE CHEMICALS EUROPE 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.