Granted Patent
Utility
US 6,492,011 · App. 09/145,594
Wear-resistant workpiece and method for producing same
Inventors:
Hans Brändle, Nobuhiko Shima
Patented Case
View Patent ↗
Granted: Dec 10, 2002
Filed: Sep 2, 1998
Inventors
Hans Brändle
Nobuhiko Shima
Assignee (at issue)
Unaxis Trading Ltd
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.