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Patents Grants
last 30 patents
Information
Patent Grant
Retractable friction stir welding spindle
Patent number
11,897,049
Issue date
Feb 13, 2024
Beijing University of Technology
Shujun Chen
B23 - MACHINE TOOLS METAL-WORKING NOT OTHERWISE PROVIDED FOR
Information
Patent Grant
Low back pressure penetrating arc welding apparatus and method
Patent number
9,656,341
Issue date
May 23, 2017
Beijing University of Technology
Fan Jiang
B23 - MACHINE TOOLS METAL-WORKING NOT OTHERWISE PROVIDED FOR
Information
Patent Grant
Gas tungsten arc welding with cross AC arcing twin wires
Patent number
9,457,420
Issue date
Oct 4, 2016
Beijing University of Technology
Shujun Chen
B23 - MACHINE TOOLS METAL-WORKING NOT OTHERWISE PROVIDED FOR
Patents Applications
last 30 patents
Information
Patent Application
DEVICE AND METHOD FOR CONTROLLING SIZE OF MOLTEN POOL IN WIRE AND A...
Publication number
20230286049
Publication date
Sep 14, 2023
BEIJING UNIVERSITY OF TECHNOLOGY
Fan JIANG
B22 - CASTING POWDER METALLURGY
Information
Patent Application
Retractable Friction Stir Welding Spindle
Publication number
20230241707
Publication date
Aug 3, 2023
BEIJING UNIVERSITY OF TECHNOLOGY
Shujun Chen
B23 - MACHINE TOOLS METAL-WORKING NOT OTHERWISE PROVIDED FOR
Information
Patent Application
A Low Back Pressure Penetrating Arc Welding Apparatus and Method
Publication number
20160243642
Publication date
Aug 25, 2016
BEIJING UNIVERSITY OF TECHNOLOGY
Fan Jiang
B23 - MACHINE TOOLS METAL-WORKING NOT OTHERWISE PROVIDED FOR
Information
Patent Application
CENTRAL NEGATIVE PRESSURE ARC WELDING APPARATUS AND METHOD
Publication number
20160067811
Publication date
Mar 10, 2016
Beijing University of Technology
Fan JIANG
B23 - MACHINE TOOLS METAL-WORKING NOT OTHERWISE PROVIDED FOR
Information
Patent Application
GAS TUNGSTEN ARC WELDING WITH CROSS AC ARCING TWIN WIRES
Publication number
20140291297
Publication date
Oct 2, 2014
SHUJUN CHEN
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