TREA

Toshiro Narizuka

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  • Kyoto, JP
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Patents Grantslast 30 patents

  • Information Patent Grant

    Phthalocyanine compounds
    • Patent number 6,043,355
    • Issue date Mar 28, 2000
    • Ricoh Company, Ltd.
    • Toru Yashiro
    • C07 - ORGANIC CHEMISTRY
  • Information Patent Grant

    Phthalocyanine compounds
    • Patent number 5,932,721
    • Issue date Aug 3, 1999
    • Ricoh Company, Ltd.
    • Toru Yashiro
    • C07 - ORGANIC CHEMISTRY