3 Utility Patents
#339 in Xi'an
#44,638 in China
Forward Citations = 1
Company Filing History:
China University of Petroleum
Oil and Gas Technology Research Institute, Petrochina Changqing Oilfield Company
University of Science and Technology Beijing
4. 1 out of 38
China University of Geosciences (beijing)
5. 1 out of 1
Northwest Oilfield Branch Engineering Technology Research Institute, Sinopec Group
where one patent can have more than one assignee
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