Granted Patent
Utility
US 4,588,519 · App. 06/473,157
Method of inhibiting corrosion of iron base metals
Inventor:
Vincent Kuhn
Patented Case
View Patent ↗
Granted: May 13, 1986
Filed: Feb 25, 1983
Inventor
Vincent Kuhn
Assignee (at issue)
Dearborn Chemical Company Limited
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.