Granted Patent
Utility
US 4,737,206 · App. 06/894,470
Extruded aluminum alloys having improved wear resistance and process for preparing same
Inventor:
Ichiro Iwai
Patented Case
View Patent ↗
Granted: Apr 12, 1988
Filed: Aug 4, 1986
Inventor
Ichiro Iwai
Assignee (at issue)
Showa Aluminum Corp.
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.