Granted Patent
Utility
US 6,765,740 · App. 09/956,977
Composite magnetic head, magnetic disk drive using the head, and control method for the magnetic disk
Inventor:
Reijiro Tsuchiya
Patented Case
View Patent ↗
Granted: Jul 20, 2004
Filed: Sep 21, 2001
Inventor
Reijiro Tsuchiya
Assignee (at issue)
Hitachi Global Storage Technologies Japan, 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.