Randy De Werff

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The Woodlands, TX, US

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Patents Grantslast 30 patents

Information Patent Grant
Ball check-valve for linear reciprocating downhole pumps
- Patent number 12,209,484
- Issue date Jan 28, 2025
- CHAMPIONX LLC
- Juan Felipe Correa Pugliese
- E21 - EARTH DRILLING MINING
Information Patent Grant
Downhole pump sand filtering snares
- Patent number 11,300,121
- Issue date Apr 12, 2022
- Harbison-Fischer, Inc.
- Felipe Correa
- E21 - EARTH DRILLING MINING

Patents Applicationslast 30 patents

Information Patent Application
VALVE ASSEMBLIES, VALVE ASSEMBLIES FOR USE IN PLUNGER APPLICATIONS...
- Publication number 20240376885
- Publication date Nov 14, 2024
- ChampionX LLC
- Ramamurthy Narasimhan
- F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
Information Patent Application
VALVE ASSEMBLIES, VALVE ASSEMBLIES FOR USE WITH DOWNHOLE PUMPS AND...
- Publication number 20220196007
- Publication date Jun 23, 2022
- Harbison-Fischer, Inc.
- Ramamurthy Narasimhan
- F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
Information Patent Application
Ball check-valve for linear reciprocating downhole pumps
- Publication number 20220090470
- Publication date Mar 24, 2022
- Harbison-Fischer, Inc.
- Juan Felipe Correa Pugliese
- E21 - EARTH DRILLING MINING
Information Patent Application
Downhole Pump Sand Filtering Snares
- Publication number 20200263688
- Publication date Aug 20, 2020
- Harbison-Fischer, Inc.
- Felipe Correa
- E21 - EARTH DRILLING MINING