Inventor · disambiguated record
Qianwen Tang
Also filed as: TANG QIANWEN
2 granted patents·8 citations·filing 2015–2016
46Inventor score
Technology areasE21B
Files withCHINA PETROLEUM & CHEM CORP2
Top patents by PatentIndex Score
2 records- 0183US9932784B2Device for handling oil pipes and method for workoverCHINA PETROLEUM & CHEM CORP·Filed 2016·Granted Apr 3, 2018·8 cites·19 claims
- 0229US9732570B2Apparatus for tripping oil pipe and system for automatic well workoverCHINA PETROLEUM & CHEM CORP·Filed 2015·Granted Aug 15, 2017·0 cites·13 claims
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →