Granted Patent
Utility
US 4,266,071 · App. 06/157,760
Process for the preparation of N-(1-alkoxycarbonylethyl)-2,6-dialkylanilines
Inventors:
Alfred Grieder, Klaus-Jurgen Coers
Patented Case
View Patent ↗
Granted: May 5, 1981
Filed: Jun 9, 1980
Inventors
Alfred Grieder
Klaus-Jurgen Coers
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.