Granted Patent
Utility
US 6,756,113 · App. 10/077,880
Magnetic recording medium and manufacturing method thereof
Inventors:
Yoshibumi Matsuda, Koji Sakamoto, Tetsuya Kanbe, Yotsuo Yahisa
Patented Case
View Patent ↗
Granted: Jun 29, 2004
Filed: Feb 20, 2002
Inventors
Yoshibumi Matsuda
Koji Sakamoto
Tetsuya Kanbe
Yotsuo Yahisa
Assignee (at issue)
Hitachi 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.