Granted Patent
Utility
US 4,865,700 · App. 07/227,967
Plating bath and process for making microporous chromium deposits
Inventors:
Joseph G. Sovran, Robert J. Metz
Patented Case
View Patent ↗
Granted: Sep 12, 1989
Filed: Aug 3, 1988
Inventors
Joseph G. Sovran
Robert J. Metz
Assignee (at issue)
M&T Chemicals, Inc.
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.