Granted Patent
Utility
US 4,725,320 · App. 07/021,521
Anti corrosion metal complex compositions
Inventors:
Bernard Tury, Glyn R. John, Noreen L. Thomas
Patented Case
View Patent ↗
Granted: Feb 16, 1988
Filed: Feb 26, 1987
Inventors
Bernard Tury
Glyn R. John
Noreen L. Thomas
Assignee (at issue)
IMPERIAL CHEMICAL INDUSTRIES 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.