Inventor · disambiguated record
David D. Simpson
Also filed as: SIMPSON DAVID · SIMPSON DAVID D
3 granted patents·6 citations·filing 2012–2018
58Inventor score
Top patents by PatentIndex Score
3 records- 0168US10662941B2Modular pneumatic well pump systemQ E D ENV SYSTEMS INC·Filed 2018·Granted May 26, 2020·1 cites·18 claims
- 0265US9357111B2CasingWHITE DANIEL JOHN·Filed 2012·Granted May 31, 2016·4 cites·18 claims
- 0356US9587483B2Landfill well liquid level control pumpQ E D ENV SYSTEMS INC·Filed 2015·Granted Mar 7, 2017·1 cites·20 claims
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →