2 Utility Patents
#16 in Dongying
#63,973 in China
Forward Citations = 8
Company Filing History:
China Petroleum & Chemical Corporation
Cnpc Engineering Technology R&d Company Limited
China University of Petroleum
4. 1 out of 7
Cnpc Chuanqing Drilling Engineering Company Limited
5. 1 out of 2
Research Institute of Petroleum Engineering, Shengli Oil Field, Sinopec
where one patent can have more than one assignee
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