Granted Patent
Utility
US 5,702,631 · App. 08/477,413
Aqueous corrosion inhibitor formulations
Inventors:
John J. Conville, Robert Chwalik, Shrikant V. DeSai, David E. Turcotte, James T. Lyon
Patented Case
View Patent ↗
Granted: Dec 30, 1997
Filed: Jun 7, 1995
Inventors
John J. Conville
Robert Chwalik
Shrikant V. DeSai
David E. Turcotte
James T. Lyon
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.