Granted Patent
Utility
US 5,964,939 · App. 08/887,589
Dye transfer inhibiting fabric softener compositions
Inventors:
Daniel Fox, Nancy Pergament, Feng-Lung Gordon Hsu
Patented Case
View Patent ↗
Granted: Oct 12, 1999
Filed: Jul 3, 1997
Inventors
Daniel Fox
Nancy Pergament
Feng-Lung Gordon Hsu
Assignee (at issue)
Lever Brothers Company, division of Conopco, Inc.
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.