Granted Patent
Utility
US 5,484,549 · App. 08/114,193
Potentiated aqueous ozone cleaning composition for removal of a contaminating soil from a surface
Inventors:
Robert D. P. Hei, Thomas R. Oakes, Guang-Jong Jason Wei
Patented Case
View Patent ↗
Granted: Jan 16, 1996
Filed: Aug 30, 1993
Inventors
Robert D. P. Hei
Thomas R. Oakes
Guang-Jong Jason Wei
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.