Granted Patent
Utility
US 5,658,844 · App. 08/595,253
Catalyst for the production of cyanopyriclines
Inventors:
Lukas V. Hippel, Armin Neher, Dietrich Arntz
Patented Case
View Patent ↗
Granted: Aug 19, 1997
Filed: Feb 1, 1996
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.