Granted Patent
Utility
US 5,256,332 · App. 07/978,831
Method of inhibiting corrosion in aqueous systems
Inventor:
Stephen M. Kessler
Patented Case
View Patent ↗
Granted: Oct 26, 1993
Filed: Nov 19, 1992
Inventor
Stephen M. Kessler
Assignee (at issue)
Betz Laboratories, 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.