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Fumihiro Tokunaga

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  • Shizuoka, JP
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Patents Grantslast 30 patents

  • Information Patent Grant

    Magnetic recording medium
    • Patent number 5,057,373
    • Issue date Oct 15, 1991
    • Fuji Photo Film Co., Ltd.
    • Fumihiro Tokunaga
    • 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 4,678,706
    • Issue date Jul 7, 1987
    • Fuji Photo Film Co., Ltd.
    • Fumihiro Tokunaga
    • G11 - INFORMATION STORAGE
  • Information Patent Grant

    Magnetic recording medium
    • Patent number 4,656,088
    • Issue date Apr 7, 1987
    • Fuji Photo Film Co., Ltd.
    • Fumihiro Tokunaga
    • G11 - INFORMATION STORAGE
  • Information Patent Grant

    Negative working diazo light-sensitive composition with oxonol dye...
    • Patent number 4,542,085
    • Issue date Sep 17, 1985
    • Fuji Photo Film Co., Ltd.
    • Hiroshi Takahashi
    • G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY