Inventor · disambiguated record
Chunqiao Ren
Also filed as: REN CHUNQIAO
10 granted patents·1 pending application·297 citations·filing 2008–2014
91Inventor score
Top patents by PatentIndex Score
11 records- 0196US8904716B2Bi-directionally raisable drilling rig mastNAT OILWELL VARCO LP·Filed 2013·Granted Dec 9, 2014·29 cites·29 claims
- 0295US9163462B2Bi-directionally raisable drilling rig mastNAT OILWELL VARCO LP·Filed 2014·Granted Oct 20, 2015·22 cites·20 claims
- 0393US8468753B2Drilling rigs and erection methodsDONNALLY ROBERT BENJAMIN·Filed 2008·Granted Jun 25, 2013·63 cites·31 claims
- 0492US9441423B2Drilling rig masts and methods of assembly and erectionDONNALLY ROBERT BENJAMIN·Filed 2013·Granted Sep 13, 2016·23 cites·20 claims
- 0592US8863449B2Substructure of a mobile drilling rig with a movable center floor sectionNAT OILWELL VARCO LP·Filed 2013·Granted Oct 21, 2014·19 cites·27 claims
- 0691US8250816B2Drilling rig structure installation and methodsDONNALLY ROBERT BENJAMIN·Filed 2008·Granted Aug 28, 2012·74 cites·22 claims
- 0790US8549815B2Drilling rig masts and methods of assembly and erecting mastsDONNALLY ROBERT BENJAMIN·Filed 2008·Granted Oct 8, 2013·45 cites·17 claims
- 0878US8047303B2Drilling rig drawworks installationNAT OILWELL VARCO LP·Filed 2008·Granted Nov 1, 2011·18 cites·21 claims
- 0963US8875911B2Drilling rig mast lift systems and methodsDONNALLY ROBERT B·Filed 2010·Granted Nov 4, 2014·3 cites·25 claims
- 1061US9488013B2Bi-directionally raisable drilling rig mastNAT OILWELL VARCO LP·Filed 2014·Granted Nov 8, 2016·1 cites·19 claims
- 1161US2009293417A1Grating fastening methods and systemsREN CHUNQIAO·Filed 2008·Application pending·0 cites
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →