TREA

Nagahisa Matsudaira

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  • Tokyo, JP
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Patents Grantslast 30 patents

  • Information Patent Grant

    Transparent hologram seal
    • Patent number RE38321
    • Issue date Nov 18, 2003
    • Toppan Printing Co., Ltd.
    • Haruo Uyama
    • 428 - Stock material or miscellaneous articles
  • Information Patent Grant

    Biodegradable cards
    • Patent number 6,096,431
    • Issue date Aug 1, 2000
    • Toppan Printing Co., Ltd.
    • Nagahisa Matsudaira
    • G06 - COMPUTING CALCULATING COUNTING
  • Information Patent Grant

    Transparent hologram seal
    • Patent number 5,700,550
    • Issue date Dec 23, 1997
    • Toppan Printing Co., Ltd.
    • Haruo Uyama
    • G06 - COMPUTING CALCULATING COUNTING
  • Information Patent Grant

    Monochromatic-light reproduction type hologram, and method and appa...
    • Patent number 5,486,933
    • Issue date Jan 23, 1996
    • Toppan Printing Co., Ltd.
    • Naoaki Shindo
    • G06 - COMPUTING CALCULATING COUNTING
  • Information Patent Grant

    Electrochromic display device
    • Patent number 4,448,493
    • Issue date May 15, 1984
    • Toppan Printing Co., Ltd.
    • Nagahisa Matsudaira
    • G02 - OPTICS