TREA

Tsutomu Asaka

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  • Chiba, JP
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Patents Grantslast 30 patents

  • Information Patent Grant

    Optical magnetic recording member
    • Patent number 4,683,176
    • Issue date Jul 28, 1987
    • Nihonshinku Gijutsu Kabushiki Kaisha
    • Kyuzo Nakamura
    • G11 - INFORMATION STORAGE
  • Information Patent Grant

    Optical magnetic recording member
    • Patent number 4,661,420
    • Issue date Apr 28, 1987
    • Nihon Shinku Gijutsu Kabushiki Kaisha
    • Kyuzo Nakamura
    • G11 - INFORMATION STORAGE