Granted Patent
Utility
US 4,749,412 · App. 07/031,253
Method and composition for the inhibition of corrosion
Inventors:
Stanley J. Ciuba, Michael Bartelme
Patented Case
View Patent ↗
Granted: Jun 7, 1988
Filed: Mar 26, 1987
Inventors
Stanley J. Ciuba
Michael Bartelme
Assignee (at issue)
Drew Chemical 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.