Granted Patent
Utility
US 6,274,664 · App. 09/350,064
Dye-transfer-inhibiting compositions and particulate detergent compositions containing them
Inventors:
Derek William Emery, Neil John Jones, Hendrik Ruijter, Antonius Henricus J. Strijbosch
Patented Case
View Patent ↗
Granted: Aug 14, 2001
Filed: Jul 8, 1999
Inventors
Derek William Emery
Neil John Jones
Hendrik Ruijter
Antonius Henricus J. Strijbosch
Assignee (at issue)
Unilever Home & Personal Care USA, 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.