Granted Patent
Utility
US 4,306,986 · App. 06/202,966
Selected poly(oxyalkylated) pyrazoles and their use as corrosion inhibitors
Inventor:
Henry W. Schiessl
Patented Case
View Patent ↗
Granted: Dec 22, 1981
Filed: Nov 3, 1980
Inventor
Henry W. Schiessl
Assignee (at issue)
Olin Corporation
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.