Inventor · disambiguated record
Randy De Werff
Also filed as: DE WERFF RANDY
3 granted patents·3 pending applications·8 citations·filing 2020–2025
59Inventor score
Top patents by PatentIndex Score
6 records- 0187US11300121B2Downhole pump sand filtering snaresHARBISON FISCHER INC·Filed 2020·Granted Apr 12, 2022·7 cites·19 claims
- 0280US2025361789A1Valve assemblies, valve assemblies for use with downhole components and related methodsCHAMPIONX LLC·Filed 2025·Application pending·0 cites
- 0378US12460630B2Valve assemblies, valve assemblies for use with downhole pumps and related methodsCHAMPIONX LLC·Filed 2022·Granted Nov 4, 2025·1 cites·20 claims
- 0470US2024376885A1Valve assemblies, valve assemblies for use in plunger applications and related methodsCHAMPIONX LLC·Filed 2024·Application pending·0 cites
- 0562US2025172055A1Methods of forming and restricting fluid flow with a valve assemblyCHAMPIONX LLC·Filed 2025·Application pending·0 cites
- 0655US12209484B2Ball check-valve for linear reciprocating downhole pumpsCHAMPIONX LLC·Filed 2021·Granted Jan 28, 2025·0 cites·28 claims
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →