Granted Patent
Utility
US 6,686,325 · App. 10/099,535
Alkaline sensitive metal cleaning composition, method for cleaning an alkaline sensitive metal surface, and washing facility
Inventors:
Jerry D. Hoyt, Michael E. Besse, Terry J. Klos, Mark Levitt, Richard Ruhr
Patented Case
View Patent ↗
Granted: Feb 3, 2004
Filed: Mar 15, 2002
Inventors
Jerry D. Hoyt
Michael E. Besse
Terry J. Klos
Mark Levitt
Richard Ruhr
Assignee (at issue)
ECOLAB 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.