Granted Patent
Utility
US 6,147,002 · App. 09/318,814
Process for removing contaminant from a surface and composition useful therefor
Inventor:
Emil A. Kneer
Patented Case
View Patent ↗
Granted: Nov 14, 2000
Filed: May 26, 1999
Inventor
Emil A. Kneer
Assignee (at issue)
Ashland, 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.