Granted Patent
Utility
US 6,673,475 · App. 09/976,248
Magnetic recording medium and manufacturing method therefore
Inventors:
Tadaaki Oikawa, Hiroyuki Uwazumi, Takahiro Shimizu, Naoki Takizawa
Patented Case
View Patent ↗
Granted: Jan 6, 2004
Filed: Oct 11, 2001
Inventors
Tadaaki Oikawa
Hiroyuki Uwazumi
Takahiro Shimizu
Naoki Takizawa
Assignee (at issue)
FUJI ELECTRIC CO., 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.