Granted Patent
Utility
US 5,703,035 · App. 08/730,959
Highly concentrated aqueous fabric softners having improved storage stability
Inventors:
Horst Birkhan, Michael Fender, Bernhard Irrgang, Christiane Loffert, Simone Schussler
Patented Case
View Patent ↗
Granted: Dec 30, 1997
Filed: Oct 16, 1996
Inventors
Horst Birkhan
Michael Fender
Bernhard Irrgang
Christiane Loffert
Simone Schussler
Assignee (at issue)
Witco Surfactants GmbH
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.