Granted Patent
Utility
US 4,664,759 · App. 06/787,403
Method for forming adherent, bright, smooth and hard chromium electrodeposits on stainless steel substrates from high energy efficient chromium baths
Inventor:
Hyman Chessin
Patented Case
View Patent ↗
Granted: May 12, 1987
Filed: Oct 15, 1985
Inventor
Hyman Chessin
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.