TREA

Yoshiaki Hisagen

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  • Sendai, JA
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Patents Grantslast 30 patents

  • Information Patent Grant

    Leader tape
    • Patent number 4,047,232
    • Issue date Sep 6, 1977
    • Sony Corporation
    • Yoshiaki Hisagen
    • G11 - INFORMATION STORAGE
  • Information Patent Grant

    Magnetic recording medium with silane lubricant
    • Patent number 4,007,314
    • Issue date Feb 8, 1977
    • Sony Corporation
    • Shigetaka Higuchi
    • G11 - INFORMATION STORAGE
  • Information Patent Grant

    Magnetic recording medium
    • Patent number 4,007,313
    • Issue date Feb 8, 1977
    • Sony Corporation
    • Shigetaka Higuchi
    • G11 - INFORMATION STORAGE
  • Information Patent Grant

    Magnetic recording medium
    • Patent number 3,993,846
    • Issue date Nov 23, 1976
    • Sony Corporation
    • Shigetaka Higuchi
    • G11 - INFORMATION STORAGE