Granted Patent
Utility
US 6,403,242 · App. 09/524,914
Magnetic recording medium and magnetic recording system using such a magnetic recording medium
Inventors:
Tetsuya Kanbe, Yoshio Takahashi, Akira Ishikawa, Ichiro Tamai, Yuzuru Hosoe, Yoshifumi Matsuda, Kiwamu Tanahashi, Tomoo Yamamoto
Patented Case
View Patent ↗
Granted: Jun 11, 2002
Filed: Mar 14, 2000
Inventors
Tetsuya Kanbe
Yoshio Takahashi
Akira Ishikawa
Ichiro Tamai
Yuzuru Hosoe
Yoshifumi Matsuda
Kiwamu Tanahashi
Tomoo Yamamoto
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.