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
Hirotaka Hokkyo
Katsumichi Tagami
Shinzo Tsuboi

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