Granted Patent
Utility
US 6,376,455 · App. 09/600,007
Quaternary ammonium compounds, compositions containing them, and uses thereof
Inventors:
Floyd E. Friedli, Hans-Jurgen Kohle
Patented Case
View Patent ↗
Granted: Apr 23, 2002
Filed: Nov 22, 2000
Inventors
Floyd E. Friedli
Hans-Jurgen Kohle
Assignee (at issue)
Goldschmidt Rewo GmbH & Co. KG
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.