Granted Patent
Utility
US 4,885,325 · App. 07/186,280
Water dispersible quaternized aminoamide-modified waxes useful as textile finishing agents
Inventors:
Bernard Danner, Eckart Schleusener
Patented Case
View Patent ↗
Granted: Dec 5, 1989
Filed: Apr 26, 1988
Inventors
Bernard Danner
Eckart Schleusener
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.