John Tung CHAO

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Beijing, CN

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Patents Applicationslast 30 patents

Information Patent Application
Circular Electric Furnace, and Electrode Arrangement Structure Thereof
- Publication number 20190170443
- Publication date Jun 6, 2019
- BEIJING ZHONGKAIHONGDE TECHNOLOGY CO., LTD.
- John Tung CHAO
- H05 - ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
Information Patent Application
SMELTING METHOD FOR METALLURGICAL ELECTRIC-FURNACE
- Publication number 20190161816
- Publication date May 30, 2019
- BEIJING ZHONGKAIHONGDE TECHNOLOGY CO., LTD.
- John Tung CHAO
- C21 - METALLURGY OF IRON