TREA

Tazuko Ishizuka

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  • Tokyo, JP
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Patents Grantslast 30 patents

  • Information Patent Grant

    Exposure apparatus having a magnifying lens system
    • Patent number 5,078,474
    • Issue date Jan 7, 1992
    • Asaki Kogaku Kogyo Kabushiki Kaisha
    • Masatoshi Marui
    • G02 - OPTICS
  • Information Patent Grant

    Exposure apparatus
    • Patent number 5,062,692
    • Issue date Nov 5, 1991
    • Asahi Kogaku Kogyo Kabushiki Kaisha
    • Masatoshi Marui
    • G02 - OPTICS
  • Information Patent Grant

    Exposure apparatus
    • Patent number 5,026,145
    • Issue date Jun 25, 1991
    • Asahi Kogaku Kogyo Kabushiki Kaisha
    • Masatoshi Marui
    • G02 - OPTICS
  • Information Patent Grant

    F..theta. lens system
    • Patent number 4,863,250
    • Issue date Sep 5, 1989
    • Tazuko Ishizuka
    • G02 - OPTICS
  • Information Patent Grant

    Scanning optical system
    • Patent number 4,776,654
    • Issue date Oct 11, 1988
    • Asahi Kogaku Kogyo Kabushiki Kaisha
    • Tazuko Ishizuka
    • G02 - OPTICS