19 Utility Patents
#62 in Chengdu
#6,067 in China
#181,495 in the World
Forward Citations = 32
Company Filing History:
Southwest Petroleum University

China Petroleum & Chemical Corporation
4. 2 out of 6
Sinopec Southwest Oil & Gas Company
5. 2 out of 26,616

where one patent can have more than one assignee
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