1 Utility Patents
#1,165 in Qingdao
#99,544 in China
Forward Citations = 0
Company Filing History:
China University of Petroleum (east China)
China University of Geosciences (beijing)
Shengli Oilfield Branch, China Petroleum & Chemical Co., Ltd
4. 1 out of 3
Northwest Oilfield Branch, China Petroleum & Chemical Co., Ltd
where one patent can have more than one assignee
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