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Yoshiharu Katsuta
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Takatsuki, JP
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last 30 patents
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Patent Grant
Audio tape cassette comprising a felt pad and a magnetic tape havin...
Patent number
5,420,738
Issue date
May 30, 1995
Hitachi Maxell, Ltd.
Yoshiharu Katsuta
G11 - INFORMATION STORAGE
Information
Patent Grant
Audio tape cassette, audio tape and production method of the same
Patent number
5,357,391
Issue date
Oct 18, 1994
Hitachi Maxell, Ltd.
Yoshiharu Katsuta
G11 - INFORMATION STORAGE
Information
Patent Grant
Magnetic recording medium and non-aqueous suspension of inorganic s...
Patent number
4,895,763
Issue date
Jan 23, 1990
Hitachi Maxell, Ltd.
Shigeo Aoyama
G11 - INFORMATION STORAGE
Information
Patent Grant
Magnetic recording medium
Patent number
4,741,953
Issue date
May 3, 1988
Hitachi Maxell, Ltd.
Yoshiharu Katsuta
G11 - INFORMATION STORAGE