Granted Patent
Utility
US 4,801,754 · App. 07/125,595
Hydroformylation process
Inventors:
Hanswilhelm Bach, Boy Cornils, Wilhelm Gick, Gehard Diekhaus, Werner Konkol, Ernest Wiebus
Patented Case
View Patent ↗
Granted: Jan 31, 1989
Filed: Nov 25, 1987
Inventors
Hanswilhelm Bach
Boy Cornils
Wilhelm Gick
Gehard Diekhaus
Werner Konkol
Ernest Wiebus
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.