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Koichi Yamauchi

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Patents Grantslast 30 patents

  • Information Patent Grant

    Magnetic recording medium containing ferro magnetic powder, polar g...
    • Patent number 5,126,202
    • Issue date Jun 30, 1992
    • Fuji Photo Film Co., Ltd.
    • Hiroo Inaba
    • G11 - INFORMATION STORAGE
  • Information Patent Grant

    Magnetic recording medium
    • Patent number 5,112,680
    • Issue date May 12, 1992
    • Fuji Photo Film Co., Ltd.
    • Hiroo Inaba
    • G11 - INFORMATION STORAGE
  • Information Patent Grant

    Magnetic recording medium
    • Patent number 5,075,167
    • Issue date Dec 24, 1991
    • Fuji Photo Film Co., Ltd.
    • Koichi Yamauchi
    • G11 - INFORMATION STORAGE
  • Information Patent Grant

    Magnetic recording medium
    • Patent number 4,503,120
    • Issue date Mar 5, 1985
    • Fuji Photo Film Co., Ltd.
    • Koichi Yamauchi
    • C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
  • Information Patent Grant

    Magnetic recording medium
    • Patent number 4,431,700
    • Issue date Feb 14, 1984
    • Fuji Photo Film Co., Ltd.
    • Yasuyuki Yamada
    • C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...