Yoshiyuki Takahira

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Suita, JP

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Patents Grantslast 30 patents

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
- Patent number 4,871,606
- Issue date Oct 3, 1989
- Hitachi Maxell, Ltd.
- Takeshi Matsuura
- G11 - INFORMATION STORAGE
Information Patent Grant
Magnetic recording medium
- Patent number 4,716,076
- Issue date Dec 29, 1987
- Hitachi Maxell, Ltd.
- Akira Morioka
- G11 - INFORMATION STORAGE
Information Patent Grant
Magnetic recording medium
- Patent number 4,618,536
- Issue date Oct 21, 1986
- Hitachi Maxell, Ltd.
- Akira Morioka
- G02 - OPTICS