4 Utility Patents
#9,319 in Beijing
#33,786 in China
Forward Citations = 2
Company Filing History:
China University of Petroleum
China University of Geosciences (beijing)
Northwest Oilfield Branch, China Petroleum & Chemical Co., Ltd
4. 1 out of 1
Shengli Oilfield Branch, China Petroleum & Chemical Co., Ltd
where one patent can have more than one assignee
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