Granted Patent
Utility
US 5,919,581 · App. 08/670,121
Magnetic recording system and magnetic recording medium used therefor
Inventors:
Tomoo Yamamoto, Nobuyuki Inaba, Masukazu Igarashi, Masaaki Futamoto, Yuzuru Hosoe, Ichiro Tamai, Emi Mangyo, Kazusuke Yamanaka
Patented Case
View Patent ↗
Granted: Jul 6, 1999
Filed: Jun 25, 1996
Inventors
Tomoo Yamamoto
Nobuyuki Inaba
Masukazu Igarashi
Masaaki Futamoto
Yuzuru Hosoe
Ichiro Tamai
Emi Mangyo
Kazusuke Yamanaka
Assignee (at issue)
HITACHI, 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.