72 Utility and 2 Design Patents
#452 in Beijing
#826 in China
#18,085 in the World
rank by utility patentsForward Citations = 1,437
Company Filing History:






4. 4 out of 602
China Petroleum & Chemical Corporation
5. 4 out of 92
Beijing Research Institute of Chemical Industry, China Petroleum & Chemical Corporation
where one patent can have more than one assignee
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