Granted Patent
Utility
US 4,946,889 · App. 07/362,729
Coating composition
Inventor:
Akinori Nishioka
Patented Case
View Patent ↗
Granted: Aug 7, 1990
Filed: Jun 7, 1989
Inventor
Akinori Nishioka
Assignee (at issue)
Atochem North America, 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.