Granted Patent
Utility
US 5,882,355 · App. 08/835,246
Cleaning process
Inventor:
Jean Hypolites Koek
Patented Case
View Patent ↗
Granted: Mar 16, 1999
Filed: Apr 7, 1997
Inventor
Jean Hypolites Koek
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.