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Joong Koo Ahn

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  • Gyeonggi-do, KR
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Patents Grantslast 30 patents

  • Information Patent Grant

    Helmet shield including ventilation unit
    • Patent number 9,801,425
    • Issue date Oct 31, 2017
    • HJC Corp.
    • Joong Koo Ahn
    • A42 - HEADWEAR
  • Information Patent Grant

    Safety helmet
    • Patent number D581099
    • Issue date Nov 18, 2008
    • HJC Co., Ltd
    • Joong Koo Ahn
    • D29 - Equipment for safety, protection, and rescue

Patents Applicationslast 30 patents