Granted Patent
Utility
US 6,594,099 · App. 09/854,740
Apparatus for erasing data stored on a magnetic disk
Inventor:
Kohji Serizawa
Patented Case
View Patent ↗
Granted: Jul 15, 2003
Filed: May 14, 2001
Inventor
Kohji Serizawa
Assignee (at issue)
International Business Machines Corporation
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.