Inventor · disambiguated record
David Sim
Also filed as: SIM DAVID · SIM DAVID F
2 granted patents·1 pending application·7 citations·filing 2003–2006
46Inventor score
Top patents by PatentIndex Score
3 records- 0138US7429934B2Mud pulse landing assembly for use in directional drillingRYAN ENERGY TECH·Filed 2003·Granted Sep 30, 2008·7 cites·5 claims
- 0228US7088260B2High speed data communication protocol for use with EM data telemetry antennaeRYAN ENERGY TECH·Filed 2004·Granted Aug 8, 2006·0 cites·13 claims
- 0323US2007227780A1Drill string system for performing measurement while drilling and logging while drilling operationsMACPHERSON CALUM ROBERT·Filed 2006·Application pending·0 cites
Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →