29 Utility Patents
#14 in Qingdao
#3,520 in China
#96,653 in the World
Forward Citations = 6
Company Filing History:
Qingdao University of Technology
Ningbo Sanhan Alloy Material Co., Ltd.
Shanghai Jinzhao Energy Saving Technology Co., Ltd
4. 6 out of 110
Chongqing University
5. 2 out of 2
Qingdao Sisa Abrasives Co., Ltd.
where one patent can have more than one assignee
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