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Yao Ha

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  • Jiangsu, CN
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Patents Grantslast 30 patents

  • Information Patent Grant

    Ultrasonic flaw detector test block
    • Patent number 11,366,084
    • Issue date Jun 21, 2022
    • NANJING DEVELOP ADVANCED MANUFACTURING CO., LTD.
    • Changhua Chen
    • G01 - MEASURING TESTING
  • Information Patent Grant

    Portable wire cutting device for sampling steel ingot
    • Patent number 11,045,888
    • Issue date Jun 29, 2021
    • NANJING DEVELOP ADVANCED MANUFACTURING CO., LTD.
    • Lingjun He
    • B23 - MACHINE TOOLS METAL-WORKING NOT OTHERWISE PROVIDED FOR
  • Information Patent Grant

    Heel test block
    • Patent number 9,810,667
    • Issue date Nov 7, 2017
    • Nanjing Develop Advanced Manufacturing Co., Ltd.
    • Changhua Chen
    • G01 - MEASURING TESTING

Patents Applicationslast 30 patents

  • Information Patent Application

    PORTABLE WIRE CUTTING DEVICE FOR SAMPLING STEEL INGOT
    • Publication number 20210107077
    • Publication date Apr 15, 2021
    • NANJING DEVELOP ADVANCED MANUFACTURING CO., LTD.
    • Lingjun HE
    • B23 - MACHINE TOOLS METAL-WORKING NOT OTHERWISE PROVIDED FOR
  • Information Patent Application

    DUDOU-SHAPED TEST BLOCK
    • Publication number 20210003537
    • Publication date Jan 7, 2021
    • NANJING DEVELOP ADVANCED MANUFACTURING CO., LTD.
    • Changhua CHEN
    • G01 - MEASURING TESTING