CHIN-AN KU

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  • TAINAN CITY, TW

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  • Information Patent Grant

    Invisible ink and method of making the same

    • Patent number 12,325,803
    • Issue date Jun 10, 2025
    • National Cheng Kung University
    • Chen-Kuei Chung
    • C09 - DYES PAINTS POLISHES NATURAL RESINS ADHESIVES MISCELLANEOUS COMPOSITION...

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