44 Utility and 2 Design Patents
#970 in Beijing
#2,019 in China
#48,488 in the World
rank by utility patentsForward Citations = 54
Company Filing History:
China Petroleum & Chemical Corporation
Beijing Research Institute of Chemical Industry, China Petroleum & Chemical Corporation
North China Electric Power University
4. 5 out of 163,916

5. 4 out of 120

where one patent can have more than one assignee
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