Granted Patent
Utility
US 5,660,890 · App. 08/723,854
Water-based soft coating for metals
Inventors:
Rosanna P. Rudy, Andrew A. Romano
Patented Case
View Patent ↗
Granted: Aug 26, 1997
Filed: Sep 30, 1996
Inventors
Rosanna P. Rudy
Andrew A. Romano
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.