Hui Li

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Shizuishan City, CN

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Patents Grantslast 30 patents

Information Patent Grant
Tantalum powder and preparation method therefor
- Patent number 11,534,830
- Issue date Dec 27, 2022
- Ningxia Orient Tantalum Industry Co., Ltd.
- Haiyan Ma
- B22 - CASTING POWDER METALLURGY

Patents Applicationslast 30 patents

Information Patent Application
TANTALUM POWDER AND PREPARATION METHOD THEREFOR
- Publication number 20210060654
- Publication date Mar 4, 2021
- Ningxia Orient Tantalum Industry Co., Ltd.
- Haiyan MA
- B22 - CASTING POWDER METALLURGY
Information Patent Application
METHOD FOR PASSIVATING TANTALUM METAL SURFACE AND APPARATUS THEREOF
- Publication number 20140076462
- Publication date Mar 20, 2014
- Ningxia Orient Tantalum Industry Co., Ltd.
- Aiguo Zheng
- C23 - COATING METALLIC MATERIAL COATING MATERIAL WITH METALLIC MATERIAL CHEMI...