Granted Patent
Utility
US 6,818,478 · App. 09/665,377
Resin ceramic compositions having magnetic properties
Inventor:
Ronald J. Wolf
Patented Case
View Patent ↗
Granted: Nov 16, 2004
Filed: Sep 20, 2000
Inventor
Ronald J. Wolf
Assignee (at issue)
DANA LIMITED
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.