Granted Patent
Utility
US 4,550,203 · App. 06/466,456
Process for the preparation of N-substituted N-cyancarboxylic acid amides
Inventors:
Friedrich Stockinger, Friedrich Lohse, Helmut Zondler
Patented Case
View Patent ↗
Granted: Oct 29, 1985
Filed: Feb 15, 1983
Inventors
Friedrich Stockinger
Friedrich Lohse
Helmut Zondler
Assignee (at issue)
Ciba-Geigy
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.