24 Utility Patents
#1 in Henan
#4,601 in China
#130,009 in the World
Forward Citations = 10
Company Filing History:
Welead Infrastructure Engineering Technology (zhengzhou), Ltd.
Safekey Engineering Technology (zhengzhou), Ltd.
Infrastructure Renewal Institute of Southern China
4. 2 out of 32
Zhengzhou University
5. 1 out of 1
Infrastructure Renewal Institute of Southern California
where one patent can have more than one assignee
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