8 Utility Patents
#9 in Henan
#16,592 in China
#520,941 in the World
Forward Citations = 1
Company Filing History:
Safekey Engineering Technology (zhengzhou), Ltd.
Welead Infrastructure Engineering Technology (zhengzhou), Ltd.
Zhengzhou University
4. 2 out of 9
Infrastructure Renewal Institute of Southern China
5. 1 out of 1
Henan Institute of Sun Yat-sen University
where one patent can have more than one assignee
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