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PRIMANEX (CHINA) CO., LTD

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  • ZHAOYUAN, CN
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Patents Grantslast 30 patents

  • Information Patent Grant

    Variable optical attenuator
    • Patent number 6,631,238
    • Issue date Oct 7, 2003
    • Primanex Corporation
    • Hongdu Liu
    • G02 - OPTICS
  • Information Patent Grant

    Faraday rotator
    • Patent number 6,580,546
    • Issue date Jun 17, 2003
    • Primanex
    • Hongdu Liu
    • G02 - OPTICS

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