Inventor · disambiguated record
Dale A. Van Spengen
Also filed as: VAN SPENGEN DALE · VAN SPENGEN DALE A · VAN SPENGEN DALE ANDREW
5 granted patents·1 pending application·46 citations·filing 2000–2020
75Inventor score
Top patents by PatentIndex Score
6 records- 0183US6346790B1Induction motor system with an induction motor and an electrically isolated voltage modulation motor controllerEMERSON ELECTRIC CO·Filed 2000·Granted Feb 12, 2002·36 cites·23 claims
- 0277US8339090B2Current control apparatus operable in wet environmentVAN SPENGEN DALE A·Filed 2010·Granted Dec 25, 2012·7 cites·14 claims
- 0371US11213172B2Drain fixtureNUWHIRL SYSTEMS CORP·Filed 2019·Granted Jan 4, 2022·2 cites·20 claims
- 0462US10542846B2Flow drain for bathing apparatusNUWHIRL SYSTEMS CORP·Filed 2017·Granted Jan 28, 2020·1 cites·14 claims
- 0537US11198993B2Drain fitting deviceNUWHIRL SYSTEMS CORP·Filed 2020·Granted Dec 14, 2021·0 cites·26 claims
- 0636US2020248697A1Combined-purpose pressure booster pumpNUWHIRL SYSTEMS CORP·Filed 2020·Application pending·0 cites
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →