Granted Patent
Utility
US 5,701,578 · App. 08/752,097
Method for making a diamond-coated member
Inventor:
Yixiong Liu
Patented Case
View Patent ↗
Granted: Dec 23, 1997
Filed: Nov 20, 1996
Inventor
Yixiong Liu
Assignee (at issue)
KENNAMETAL 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.