Colin Arthur Longfield

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Clamart, FR

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Patents Grantslast 30 patents

Information Patent Grant
Indexer controlled directional valve system
- Patent number 10,514,104
- Issue date Dec 24, 2019
- Schlumberger Technology Corporation
- Edgar Jose Montiel
- F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
Information Patent Grant
Actuation control system using pilot control circuit
- Patent number 10,392,900
- Issue date Aug 27, 2019
- Schlumberger Technology Corporation
- Gary Rytlewski
- E21 - EARTH DRILLING MINING
Information Patent Grant
High pressure high temperature (HPHT) well tool control system and...
- Patent number 9,316,076
- Issue date Apr 19, 2016
- Schlumberger Technology Corporation
- Colin Longfield
- F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...

Patents Applicationslast 30 patents

Information Patent Application
MEDICAL DEVICE SYSTEM AND A METHOD FOR LOCATING MEDICAL DEVICES AND...
- Publication number 20170122069
- Publication date May 4, 2017
- SCHLUMBERGER TECHNOLOGY CORPORATION
- Gary Rytlewski
- E21 - EARTH DRILLING MINING
Information Patent Application
INDEXER CONTROLLED DIRECTIONAL VALVE SYSTEM
- Publication number 20170059045
- Publication date Mar 2, 2017
- SCHLUMBERGER TECHNOLOGY CORPORATION
- Edgar Jose Montiel
- F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
Information Patent Application
ACOUSTIC DETECTION SYSTEM
- Publication number 20140286129
- Publication date Sep 25, 2014
- SCHLUMBERGER TECHNOLOGY CORPORATION
- Colin Longfield
- E21 - EARTH DRILLING MINING