Perpendicular magnetic recording medium | Patent Publication Number 20020182445

US 20020182445 A1
Patent NumberUS 07090934 B2
Application Number10141446
Filled DateMay 8, 2002
Priority DateAug 3, 1999
Publication DateDec 5, 2002
Original AssigneeHoya Corporation
Current AssigneeWd Media Singapore Western Digital
Inventor/ApplicantsHirotaka Hokkyo
Shinzo Tsuboi
Katsumichi Tagami
Katsumichi Tagami
Hirotaka Hokkyo
Shinzo Tsuboi
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