Inventor · disambiguated record
Darrell Wayne Christianson
Also filed as: CHRISTIANSON DARRELL WAYNE
5 granted patents·11 citations·filing 2017–2021
72Inventor score
Top patents by PatentIndex Score
5 records- 0185US11247918B2Multi-media clarification systems and methodsWESTECH ENG LLC·Filed 2021·Granted Feb 15, 2022·2 cites·20 claims
- 0283US11780741B2Modular underdrain systemsWESTECH ENG LLC·Filed 2021·Granted Oct 10, 2023·2 cites·9 claims
- 0383US10913667B2Multi-media clarification systems and methodsWESTECH ENG INC·Filed 2017·Granted Feb 9, 2021·4 cites·20 claims
- 0479US10941050B2Modular underdrain systemsWESTECH ENG INC·Filed 2019·Granted Mar 9, 2021·3 cites·19 claims
- 0538US11130693B1Combination biological contactor and self-backwashing filter systemsWESTECH ENG LLC·Filed 2020·Granted Sep 28, 2021·0 cites·20 claims
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →