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Jason Cheng

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  • San-Chung, TW
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Patents Grantslast 30 patents

  • Information Patent Grant

    Ring assembly for a pen
    • Patent number 6,299,373
    • Issue date Oct 9, 2001
    • Ding Ares Enterprise Co., Ltd.
    • Jason Cheng
    • B43 - WRITING OR DRAWING IMPLEMENTS BUREAU ACCESSORIES
  • Information Patent Grant

    Dual-purpose pen
    • Patent number 6,254,295
    • Issue date Jul 3, 2001
    • Ding Ares Enterprise Co., Ltd.
    • Jason Cheng
    • B43 - WRITING OR DRAWING IMPLEMENTS BUREAU ACCESSORIES