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Guolin Yu

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  • Ningbo, CN
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Patents Grantslast 30 patents

Patents Applicationslast 30 patents

  • Information Patent Application

    ROTARY ELECTRICAL PLUG
    • Publication number 20240243533
    • Publication date Jul 18, 2024
    • NINGBO WELL ELECTRIC APPLIANCE CO., LTD.
    • Guolin YU
    • H01 - BASIC ELECTRIC ELEMENTS
  • Information Patent Application

    SCREW LAMP CAP AND SCREW LAMP SOCKET
    • Publication number 20240146009
    • Publication date May 2, 2024
    • NINGBO WELL ELECTRIC APPLIANCE CO., LTD.
    • Guolin Yu
    • H01 - BASIC ELECTRIC ELEMENTS
  • Information Patent Application

    MOUNTING ASSEMBLY FOR ELECTRICAL BOX
    • Publication number 20230066965
    • Publication date Mar 2, 2023
    • NINGBO WELL ELECTRIC APPLIANCE CO., LTD.
    • Guolin Yu
    • H05 - ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
  • Information Patent Application

    ELECTRICAL CONNECTION ASSEMBLY
    • Publication number 20210296823
    • Publication date Sep 23, 2021
    • NINGBO WELL ELECTRIC APPLIANCE CO., LTD.
    • Guolin Yu
    • H01 - BASIC ELECTRIC ELEMENTS
  • Information Patent Application

    WIRE CONNECTING DEVICE AND METHOD THEREOF
    • Publication number 20210083443
    • Publication date Mar 18, 2021
    • NINGBO WELL ELECTRIC APPLIANCE CO., LTD.
    • Guolin Yu
    • H01 - BASIC ELECTRIC ELEMENTS
  • Information Patent Application

    LAMP CAP AND LAMP HOLDER THEREOF
    • Publication number 20210036475
    • Publication date Feb 4, 2021
    • NINGBO WELL ELECTRIC APPLIANCE CO., LTD.
    • Guolin Yu
    • F21 - LIGHTING
  • Information Patent Application

    COLOR CHANGING LIGHT AND CONTROLLING METHOD AND APPARATUS THEREOF
    • Publication number 20170347426
    • Publication date Nov 30, 2017
    • NINGBO WELL ELECTRIC APPLANCE CO., LTD.
    • Guolin Yu
    • H05 - ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
  • Information Patent Application

    COLOR CHANGING LIGHT AND RELATED LIGHT CHAIN THEREOF
    • Publication number 20170343170
    • Publication date Nov 30, 2017
    • NINGBO WELL ELECTRIC APPLANCE CO., LTD.
    • Guolin Yu
    • F21 - LIGHTING
  • Information Patent Application

    OUTDOOR LAMP HOLDER AND OUTDOOR LAMP STRING USING SAME
    • Publication number 20170343169
    • Publication date Nov 30, 2017
    • NINGBO WELL ELECTRIC APPLANCE CO., LTD.
    • Guolin Yu
    • F21 - LIGHTING