11 Utility Patents
#1,681 in Houston, TX
#12,026 in Texas
#179,683 in US
#364,039 in the World
Forward Citations = 4
Company Filing History:
China Petroleum & Chemical Corporation
Sinopec Tech Houston, LLC
Drilling Technology Research Institute of Shengli Petroleum Engineering Corporation Limited, Sinopec
where one patent can have more than one assignee
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