Toshihisa Okamura

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Tokyo, JP

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Patents Grantslast 30 patents

Information Patent Grant
Magnetic recording media
- Patent number 4,748,090
- Issue date May 31, 1988
- Fuji Photo Film Co., Ltd.
- Nobuyuki Yamamoto
- G11 - INFORMATION STORAGE
Information Patent Grant
Magnetic recording media
- Patent number 4,554,220
- Issue date Nov 19, 1985
- Fuji Photo Film Co., Ltd.
- Nobuyuki Yamamoto
- G11 - INFORMATION STORAGE
Information Patent Grant
Magnetic recording media with oxyfatty acid lubricant
- Patent number 4,548,873
- Issue date Oct 22, 1985
- Fuji Photo Film Co., Ltd.
- Nobuyuki Yamamoto
- G11 - INFORMATION STORAGE