Granted Patent
Utility
US 6,706,680 · App. 09/971,556
Use of quaternary polysiloxanes in laundry detergent formulations
Inventors:
Michael Fender, Sascha Oestreich
Patented Case
View Patent ↗
Granted: Mar 16, 2004
Filed: Oct 5, 2001
Inventors
Michael Fender
Sascha Oestreich
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.