TREA

Osamu Yagisawa

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  • Tokorozawa, JP
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Patents Grantslast 30 patents

  • Information Patent Grant

    Optical pickup apparatus
    • Patent number 6,175,545
    • Issue date Jan 16, 2001
    • Pioneer Electronic Corporation
    • Yusuke Akama
    • G11 - INFORMATION STORAGE
  • Information Patent Grant

    Optical pickup apparatus
    • Patent number 5,978,347
    • Issue date Nov 2, 1999
    • Pioneer Electronic Corporation
    • Yusuke Akama
    • G11 - INFORMATION STORAGE
  • Information Patent Grant

    Optical pickup apparatus
    • Patent number 5,729,522
    • Issue date Mar 17, 1998
    • Pioneer Electronic Corporation
    • Yusuke Akama
    • G11 - INFORMATION STORAGE
  • Information Patent Grant

    Apparatus for injection molding information recording disks
    • Patent number 5,006,058
    • Issue date Apr 9, 1991
    • Pioneer Electronic Corporation
    • Haruhisa Maruyama
    • B29 - WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL