Granted Patent
Utility
US 6,020,022 · App. 08/846,094
Magnetic recording medium
Inventors:
Kiyomi Ejiri, Hiroo Inaba, Shinji Saito, Satoru Hayakawa
Patented Case
View Patent ↗
Granted: Feb 1, 2000
Filed: Apr 25, 1997
Inventors
Kiyomi Ejiri
Hiroo Inaba
Shinji Saito
Satoru Hayakawa
Assignee (at issue)
Fujitsu 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.