45 Utility Patents
#940 in Beijing
#1,933 in China
#46,360 in the World
Forward Citations = 63
Company Filing History:
China University of Petroleum
Southwest Petroleum University
Cnpc Engineering Technology R&d Company Limited
4. 2 out of 7
Cnpc Chuanqing Drilling Engineering Company Limited
5. 1 out of 38
China University of Geosciences (beijing)
where one patent can have more than one assignee
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