Granted Patent
Utility
US 5,981,086 · App. 08/728,237
Dual-layer coating on high-tensile steel
Inventor:
Michael C. Siminski
Patented Case
View Patent ↗
Granted: Nov 9, 1999
Filed: Oct 8, 1996
Inventor
Michael C. Siminski
Assignee (at issue)
Morton International, 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.