Granted Patent
Utility
US 6,608,460 · App. 09/763,508
Method of driving head, head driving device and disc driving apparatus using the same method and device
Inventor:
Shuhei Okada
Patented Case
View Patent ↗
Granted: Aug 19, 2003
Filed: Jul 9, 2001
Inventor
Shuhei Okada
Assignee (at issue)
SUMITOMO ELECTRIC INDUSTRIES, 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.