Woong-Seong Chang

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Pohang-city, KR

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Patents Grantslast 30 patents

Information Patent Grant
Method for welding hollow structure
- Patent number 8,590,767
- Issue date Nov 26, 2013
- Research Institute of Industrial Science & Technology
- Chang-Kun Chun
- B23 - MACHINE TOOLS METAL-WORKING NOT OTHERWISE PROVIDED FOR
Information Patent Grant
Tool, apparatus, and method for welding workpieces
- Patent number 7,322,508
- Issue date Jan 29, 2008
- Research Institute of Industrial Science & Technology
- Woong Seong Chang
- B23 - MACHINE TOOLS METAL-WORKING NOT OTHERWISE PROVIDED FOR

Patents Applicationslast 30 patents

Information Patent Application
METHOD FOR WELDING HOLLOW STRUCTURE
- Publication number 20120325894
- Publication date Dec 27, 2012
- Research Institute of Industrial Science & Technology
- Chang-Kun CHUN
- B23 - MACHINE TOOLS METAL-WORKING NOT OTHERWISE PROVIDED FOR
Information Patent Application
Tool, apparatus, and method for welding workpieces
- Publication number 20050001016
- Publication date Jan 6, 2005
- Woong Seong Chang
- B23 - MACHINE TOOLS METAL-WORKING NOT OTHERWISE PROVIDED FOR