Granted Patent
Utility
US 6,815,409 · App. 10/251,458
Gel laundry detergent and/or pretreater which piles up after dispensing
Inventors:
Feng-Lung Gordon Hsu, Yun-Peng Zhu, Ronald Frederick Vogel, Agnes Boudou, Charles D. Ebert, Kwang Lee
Patented Case
View Patent ↗
Granted: Nov 9, 2004
Filed: Sep 20, 2002
Inventors
Feng-Lung Gordon Hsu
Yun-Peng Zhu
Ronald Frederick Vogel
Agnes Boudou
Charles D. Ebert
Kwang Lee
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.