Granted Patent
Utility
US 6,180,593 · App. 09/377,390
Fabric softeners with improved color-retaining action
Inventors:
Michael Fender, Hans-Jurgen Kohle, Anja Wilhelm
Patented Case
View Patent ↗
Granted: Jan 30, 2001
Filed: Aug 19, 1999
Inventors
Michael Fender
Hans-Jurgen Kohle
Anja Wilhelm
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.