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Yantai, CN

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Patents Grantslast 30 patents

Information Patent Grant
Method for preparing R-Fe-B based sintered magnet
- Patent number 9,901,984
- Issue date Feb 27, 2018
- Yantai Zhenghai Magnetic Material Co., Ltd.
- Qingkai Wang
- H01 - BASIC ELECTRIC ELEMENTS

Patents Applicationslast 30 patents

Information Patent Application
METHOD FOR PRODUCING A SINTERED R-IRON-BORON MAGNET
- Publication number 20180061540
- Publication date Mar 1, 2018
- Yantai Zhenghai Magnetic Material Co., Ltd.
- Qingkai WANG
- C22 - METALLURGY FERROUS OR NON-FERROUS ALLOYS TREATMENT OF ALLOYS OR NON-FER...
Information Patent Application
METHOD FOR PREPARING R-FE-B BASED SINTERED MAGNET
- Publication number 20140356217
- Publication date Dec 4, 2014
- Yantai Zhenghai Magnetic Material Co., Ltd.
- Qingkai WANG
- H01 - BASIC ELECTRIC ELEMENTS