John GREFF

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Cypress, TX, US

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Patents Grantslast 30 patents

Information Patent Grant
Multi-zone single trip completion system
- Patent number 11,629,580
- Issue date Apr 18, 2023
- Packers Plus Energy Service, Inc.
- Ronald Van Petegem
- E21 - EARTH DRILLING MINING
Information Patent Grant
Multi-zone single trip completion system
- Patent number 11,125,060
- Issue date Sep 21, 2021
- Packers Plus Energy Services, Inc.
- Ronald Van Petegem
- E21 - EARTH DRILLING MINING

Patents Applicationslast 30 patents

Information Patent Application
MULTI-ZONE SINGLE TRIP COMPLETION SYSTEM
- Publication number 20210381351
- Publication date Dec 9, 2021
- Packers Plus Energy Services, Inc.
- Ronald VAN PETEGEM
- E21 - EARTH DRILLING MINING
Information Patent Application
MULTI-ZONE SINGLE TRIP COMPLETION SYSTEM
- Publication number 20200149378
- Publication date May 14, 2020
- Packers Plus Energy Services, Inc.
- Ronald VAN PETEGEM
- E21 - EARTH DRILLING MINING