Tsutomu Kempo

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Patents Grantslast 30 patents

Information Patent Grant
Magnetic recording medium
- Patent number 5,134,027
- Issue date Jul 28, 1992
- Konica Corporation
- Takafumi Yanagita
- G11 - INFORMATION STORAGE
Information Patent Grant
Magnetic recording medium containing a copolymer having an anionic...
- Patent number 5,098,785
- Issue date Mar 24, 1992
- Konica Corporation
- Takafumi Yanagita
- C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information Patent Grant
Magnetic recording medium containing a polyurethane binder resin ha...
- Patent number 5,064,720
- Issue date Nov 12, 1991
- Konica Corporation
- Tsutomu Kempo
- G11 - INFORMATION STORAGE