TREA

Tomoyoshi Arai

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  • Saitama, JP
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Patents Grantslast 30 patents

  • Information Patent Grant

    Case for an optical disk
    • Patent number 5,263,580
    • Issue date Nov 23, 1993
    • Pioneer Electronic Corporation
    • Yukiyoshi Ciba
    • G11 - INFORMATION STORAGE
  • Information Patent Grant

    Front-loading record player
    • Patent number 4,539,669
    • Issue date Sep 3, 1985
    • Pioneer Electric Corporation
    • Tsutomu Miyakawa
    • G11 - INFORMATION STORAGE