Kenji Kumamoto

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Hino, JP

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Patents Grantslast 30 patents

Information Patent Grant
Magnetic recording medium comprising magnetic particles and a polyu...
- Patent number 5,151,330
- Issue date Sep 29, 1992
- Konica Corporation
- Kenji Kumamoto
- G11 - INFORMATION STORAGE
Information Patent Grant
Magnetic recording medium containing a specified ferromagnetic powd...
- Patent number 5,116,683
- Issue date May 26, 1992
- Konica Corporation
- Noboru Koyama
- C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...