Granted Patent
Utility
US 5,543,572 · App. 08/377,719
Monocarboxamides of polyamines
Inventors:
Walter Fischer, Christine Helbling
Patented Case
View Patent ↗
Granted: Aug 6, 1996
Filed: Jan 24, 1995
Inventors
Walter Fischer
Christine Helbling
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.