Granted Patent
Utility
US 5,049,693 · App. 07/539,570
Process for the selective hydrogenation of olefins containing nitrile groups
Inventor:
Thomas Himmler
Patented Case
View Patent ↗
Granted: Sep 17, 1991
Filed: Jun 18, 1990
Inventor
Thomas Himmler
Assignee (at issue)
Bayer 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.