Granted Patent
Utility
US 6,733,896 · App. 10/076,582
Process for treating steel-, zinc- and aluminum-based metals using a two-step coating system
Inventors:
Shawn E. Dolan, Michael J. Kay, Lawrence R. Carlson
Patented Case
View Patent ↗
Granted: May 11, 2004
Filed: Feb 15, 2002
Inventors
Shawn E. Dolan
Michael J. Kay
Lawrence R. Carlson
Assignee (at issue)
Henkel 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.