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Houjin CHEN

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Patents Grantslast 30 patents

  • Information Patent Grant

    Braille display
    • Patent number 10,733,907
    • Issue date Aug 4, 2020
    • CHINA BRAILLE PRESS
    • Xin Chen
    • G06 - COMPUTING CALCULATING COUNTING

Patents Applicationslast 30 patents

  • Information Patent Application

    BRAILLE DISPLAY
    • Publication number 20180174487
    • Publication date Jun 21, 2018
    • CHINA BRAILLE LIBRARY
    • Xin CHEN
    • G06 - COMPUTING CALCULATING COUNTING