7 Utility Patents
#138 in Qingdao
#17,208 in China
#574,425 in the World
Forward Citations = 1
Company Filing History:
Qingdao University of Technology
Qingdao Sisa Abrasives Co., Ltd.
Shenyang Hongyang Precision Ceramics Co., Ltd.
4. 1 out of 89
Chongqing University
where one patent can have more than one assignee
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