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Shanxi, CN
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Patents Grants
last 30 patents
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Patent Grant
Method for preparing large-size rare earth magnesium alloy high-per...
Patent number
11,813,653
Issue date
Nov 14, 2023
North University of China
Zhimin Zhang
B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...
Information
Patent Grant
Rotary extrusion producing method for producing inner ring rib with...
Patent number
10,265,746
Issue date
Apr 23, 2019
North University of China
Zhimin Zhang
B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...
Patents Applications
last 30 patents
Information
Patent Application
METHOD FOR PREPARING LARGE-SIZE RARE EARTH MAGNESIUM ALLOY HIGH-PER...
Publication number
20230321710
Publication date
Oct 12, 2023
NORTH UNIVERSITY OF CHINA
Zhimin Zhang
B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...
Information
Patent Application
MOLD FOR PREPARING LARGE-SIZE RARE EARTH MAGNESIUM ALLOY INGOT WITH...
Publication number
20230321705
Publication date
Oct 12, 2023
Shanxi Zhongbei Ruizhi Jingcheng Technology Co., Ltd.
Zhimin Zhang
B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...
Information
Patent Application
Rotary Extrusion Producing Method for Producing Inner Ring Rib with...
Publication number
20180056351
Publication date
Mar 1, 2018
North University of China
Zhimin Zhang
B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...