Inventor · disambiguated record
Ricki Don Marshall
Also filed as: MARSHALL RICKI · MARSHALL RICKI DON
5 granted patents·15 citations·filing 2009–2015
72Inventor score
Technology areasE21B
Top patents by PatentIndex Score
5 records- 0168US9890592B2Drive shaft for steerable earth boring assemblyBITSWAVE INC·Filed 2015·Granted Feb 13, 2018·2 cites·20 claims
- 0268US9890593B2Steerable earth boring assembly having flow tube with static sealBITSWAVE INC·Filed 2015·Granted Feb 13, 2018·2 cites·19 claims
- 0366US9970237B2Steerable earth boring assemblyBITSWAVE INC·Filed 2015·Granted May 15, 2018·2 cites·17 claims
- 0464US8570045B2Drilling system for making LWD measurements ahead of the bitTCHAKAROV BORISLAV J·Filed 2009·Granted Oct 29, 2013·9 cites·43 claims
- 0544US9580968B2Rotary steerable drilling tool with electromagnetic steering systemLIU CE·Filed 2014·Granted Feb 28, 2017·0 cites·8 claims
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