Granted Patent
Utility
US 5,347,054 · App. 08/156,451
Process for preparing aromatic aldehydes
Inventors:
Gilbert Billeb, Peter Burg
Patented Case
View Patent ↗
Granted: Sep 13, 1994
Filed: Nov 23, 1993
Inventors
Gilbert Billeb
Peter Burg
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.