Granted Patent
Utility
US 5,037,979 · App. 07/381,438
Cationic compounds
Inventors:
Alfred Hohener, Kurt Burdeska, Gerhard Reinert
Patented Case
View Patent ↗
Granted: Aug 6, 1991
Filed: Jul 18, 1989
Inventors
Alfred Hohener
Kurt Burdeska
Gerhard Reinert
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.