TREA

Hong R. Su

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  • Urayasu, JP
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Patents Grantslast 30 patents

  • Information Patent Grant

    Tactile reading device
    • Patent number 5,449,292
    • Issue date Sep 12, 1995
    • KGS Corporation
    • Yoshiyuki Tani
    • G09 - EDUCATION CRYPTOGRAPHY DISPLAY ADVERTISING SEALS
  • Information Patent Grant

    Braille cell
    • Patent number 5,226,817
    • Issue date Jul 13, 1993
    • KGS Corporation
    • Mitsuru Nakajima
    • G09 - EDUCATION CRYPTOGRAPHY DISPLAY ADVERTISING SEALS