Inventor · disambiguated record
David D. Calhoun
Also filed as: CALHOUN DAVID D
2 granted patents·1 pending application·2 citations·filing 2020–2024
33Inventor score
Technology areasC02F
Files withZERO DISCHARGE LLC3
Top patents by PatentIndex Score
3 records- 0179US11390545B2Zero discharge water treatment apparatus and methodZERO DISCHARGE LLC·Filed 2020·Granted Jul 19, 2022·2 cites·20 claims
- 0253US2024343609A1Zero Discharge Water Treatment Apparatus and MethodZERO DISCHARGE LLC·Filed 2024·Application pending·0 cites
- 0348US11897787B2Zero discharge water treatment apparatus and methodZERO DISCHARGE LLC·Filed 2022·Granted Feb 13, 2024·0 cites·49 claims
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →