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Jiajia Cheng

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  • Foshan, CN
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Patents Grantslast 30 patents

  • Information Patent Grant

    Sealing structure
    • Patent number 11,920,714
    • Issue date Mar 5, 2024
    • RIFENG ENTERPRISE (FOSHAN) CO., LTD.
    • Zhenbin Diao
    • F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
  • Information Patent Grant

    Pipe fitting joint assembly
    • Patent number 11,346,479
    • Issue date May 31, 2022
    • RIFENG ENTERPRISE (FOSHAN) CO., LTD.
    • Xiyong Lin
    • F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...

Patents Applicationslast 30 patents

  • Information Patent Application

    SEALING STRUCTURE
    • Publication number 20220307636
    • Publication date Sep 29, 2022
    • RIFENG ENTERPRISE (FOSHAN) CO., LTD.
    • Zhenbin Diao
    • F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
  • Information Patent Application

    CONNECTING JOINT
    • Publication number 20220057036
    • Publication date Feb 24, 2022
    • RIFENG ENTERPRISE (FOSHAN) CO., LTD.
    • Huijian Cao
    • F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
  • Information Patent Application

    PIPE FITTING CONNECTING METHOD AND CONNECTING STRUCTURE
    • Publication number 20200158274
    • Publication date May 21, 2020
    • RIFENG ENTERPRISE GROUP CO., LTD.
    • Huijian Cao
    • F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
  • Information Patent Application

    PIPE FITTING JOINT ASSEMBLY
    • Publication number 20200096145
    • Publication date Mar 26, 2020
    • RIFENG ENTERPRISE (FOSHAN) CO., LTD.
    • Xiyong Lin
    • F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...