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Ikumi Kawaguchi

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Patents Grantslast 30 patents

  • Information Patent Grant

    Coating composition and photochromic optical article
    • Patent number 8,852,737
    • Issue date Oct 7, 2014
    • Tokuyama Corporation
    • Ikumi Kawaguchi
    • C09 - DYES PAINTS POLISHES NATURAL RESINS ADHESIVES MISCELLANEOUS COMPOSITION...
  • Information Patent Grant

    Photochromic optical element
    • Patent number 8,557,377
    • Issue date Oct 15, 2013
    • Tokuyama Corporation
    • Katsuhiro Mori
    • C09 - DYES PAINTS POLISHES NATURAL RESINS ADHESIVES MISCELLANEOUS COMPOSITION...

Patents Applicationslast 30 patents