Granted Patent
Utility
US 4,402,949 · App. 06/317,660
Stable solutions of hydrogenated ergotalkaloids
Inventors:
Volker Hartmann, Karl Otto, Ludwig Patt
Patented Case
View Patent ↗
Granted: Sep 6, 1983
Filed: Nov 2, 1981
Inventors
Volker Hartmann
Karl Otto
Ludwig Patt
Assignee (at issue)
Sandoz 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.