Kazuo Hasumi

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Kanagawa, JP

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Patents Grantslast 30 patents

Information Patent Grant
Magnetic recording medium having two magnetic layers each containin...
- Patent number 5,141,808
- Issue date Aug 25, 1992
- Fuji Photo Film Co., Ltd.
- Hiroshi Hashimoto
- G11 - INFORMATION STORAGE
Information Patent Grant
Magnetic recording medium which contains a binder of nitrogen conta...
- Patent number 5,023,135
- Issue date Jun 11, 1991
- Fuji Photo Film Co., Ltd.
- Kazuo Hasumi
- C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information Patent Grant
Magnetic recording medium
- Patent number 5,008,147
- Issue date Apr 16, 1991
- Fuji Photo Film Co., Ltd.
- Katsumi Ryoke
- G11 - INFORMATION STORAGE
Information Patent Grant
Magnetic recording medium
- Patent number 4,970,121
- Issue date Nov 13, 1990
- Fuji Photo Film Co., Ltd.
- Fumihiro Tokunaga
- C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information Patent Grant
Magnetic recording medium
- Patent number 4,886,703
- Issue date Dec 12, 1989
- Fuji Photo Film Co., Ltd.
- Kazuo Hasumi
- G11 - INFORMATION STORAGE