Granted Patent
Utility
US 5,405,523 · App. 08/167,667
Zinc alloy plating with quaternary ammonium polymer
Inventor:
William E. Eckles
Patented Case
View Patent ↗
Granted: Apr 11, 1995
Filed: Dec 15, 1993
Inventor
William E. Eckles
Assignee (at issue)
Taskem, 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.