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Masahiro Amemiya
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Osaka, JP
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last 30 patents
Information
Patent Grant
Magnetic recording medium
Patent number
4,956,220
Issue date
Sep 11, 1990
Hitachi Maxell, Ltd.
Toshinobu Sueyoshi
G11 - INFORMATION STORAGE
Information
Patent Grant
Process for preparing ferromagnetic particles comprising metallic iron
Patent number
4,456,475
Issue date
Jun 26, 1984
Hitachi Maxell, Ltd.
Shigeo Hirai
H01 - BASIC ELECTRIC ELEMENTS
Information
Patent Grant
Method for production of metal magnetic particles
Patent number
4,400,337
Issue date
Aug 23, 1983
Hitachi Maxell, Ltd.
Yukihiro Hayashi
H01 - BASIC ELECTRIC ELEMENTS
Information
Patent Grant
Process for preparing ferromagnetic particles comprising metallic iron
Patent number
4,390,361
Issue date
Jun 28, 1983
Hitachi Maxell, Ltd.
Toshinobu Sueyoshi
B22 - CASTING POWDER METALLURGY
Information
Patent Grant
Method of producing ferromagnetic metal powder
Patent number
4,262,037
Issue date
Apr 14, 1981
Hitachi, Ltd.
Seiichi Asada
H01 - BASIC ELECTRIC ELEMENTS