Granted Patent
Utility
US 6,403,028 · App. 09/419,524
All-organic corrosion inhibitor composition and uses thereof
Inventors:
Steven Colby, Dwight E. Emerich, Edward S. Beardwood
Patented Case
View Patent ↗
Granted: Jun 11, 2002
Filed: Oct 18, 1999
Inventors
Steven Colby
Dwight E. Emerich
Edward S. Beardwood
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.