Granted Patent
Utility
US 5,892,049 · App. 08/848,605
Catalyst for the production of cyanopyridines
Inventors:
Lukas V. Hippel, Armin Neher, Dietrich Arntz
Patented Case
View Patent ↗
Granted: Apr 6, 1999
Filed: Apr 29, 1997
Inventors
Lukas V. Hippel
Armin Neher
Dietrich Arntz
Assignee (at issue)
Degussa AG
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.