Granted Patent
Utility
US 5,378,798 · App. 07/911,967
Composition and process for coating metallic substrates
Inventor:
Martin Ehrlich
Patented Case
View Patent ↗
Granted: Jan 3, 1995
Filed: Jul 10, 1992
Inventor
Martin Ehrlich
Assignee (at issue)
SHELL OIL COMPANY
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.