12 Utility Patents
#3,756 in Beijing
#10,450 in China
#327,534 in the World
Forward Citations = 0
Company Filing History:
China Petroleum & Chemical Corporation


4. 5 out of 102
Beijing Research Institute of Chemical Industry, China Petroleum & Chemical Corporation
5. 1 out of 2
Beijing Research Institute of Chemical Industry Sinopec
where one patent can have more than one assignee
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