Yoshiko Kurosawa

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Yokohama, JP

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Patents Grantslast 30 patents

Information Patent Grant
Magneto-optical recording method
- Patent number 5,459,701
- Issue date Oct 17, 1995
- Ricoh Company, Ltd.
- Toshiaki Tokita
- G11 - INFORMATION STORAGE
Information Patent Grant
Magneto-optical recording medium having first and second magnetic l...
- Patent number 5,420,833
- Issue date May 30, 1995
- Ricoh Company, Ltd.
- Motoharu Tanaka
- G11 - INFORMATION STORAGE