Gangqing LI

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Qingdao, CN

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Patents Grantslast 30 patents

Information Patent Grant
Continuous welding method and device for hybrid welding, welded fin...
- Patent number 11,931,826
- Issue date Mar 19, 2024
- CRRC QINGDAO SIFANG CO., LTD.
- Xiaohui Han
- B23 - MACHINE TOOLS METAL-WORKING NOT OTHERWISE PROVIDED FOR

Patents Applicationslast 30 patents

Information Patent Application
LASER CLADDING REPAIR METHOD AND APPARATUS FOR SURFACE DAMAGE OF PA...
- Publication number 20250196265
- Publication date Jun 19, 2025
- CRRC QINGDAO SIFANG CO., LTD.
- Xiaohui HAN
- B23 - MACHINE TOOLS METAL-WORKING NOT OTHERWISE PROVIDED FOR
Information Patent Application
CONTINUOUS WELDING METHOD AND DEVICE FOR HYBRID WELDING, WELDED FIN...
- Publication number 20210162542
- Publication date Jun 3, 2021
- CRRC QINGDAO SIFANG CO., LTD.
- Xiaohui HAN
- B23 - MACHINE TOOLS METAL-WORKING NOT OTHERWISE PROVIDED FOR