Yukinobu Yamazaki

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Ibaragi, JP

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Patents Grantslast 30 patents

Information Patent Grant
Optical information recording medium and production method thereof
- Patent number 5,089,375
- Issue date Feb 18, 1992
- Hitachi Maxell, Ltd.
- Akira Gotoh
- G11 - INFORMATION STORAGE
Information Patent Grant
Method for producing an optical recording medium
- Patent number 5,073,243
- Issue date Dec 17, 1991
- Hitachi Maxwell, Ltd.
- Akira Gotoh
- G11 - INFORMATION STORAGE
Information Patent Grant
Optical recording medium and production method thereof
- Patent number 4,908,250
- Issue date Mar 13, 1990
- Hitachi Maxell, Ltd.
- Akira Gotoh
- G11 - INFORMATION STORAGE