Denis Devilleger

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Thoiry, FR

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Patents Grantslast 30 patents

Information Patent Grant
Method of in situ repair of a wellhead base flange
- Patent number 9,169,708
- Issue date Oct 27, 2015
- STORENGY
- Denis Devilleger
- Y10 - TECHNICAL SUBJECTS COVERED BY FORMER USPC
Information Patent Grant
A hydraulic remotely-controlled bleeder valve for a well head
- Patent number 4,884,633
- Issue date Dec 5, 1989
- Gaz de France
- Jean-Yves Le Gac
- E21 - EARTH DRILLING MINING
Information Patent Grant
Isolation chamber valve
- Patent number 4,848,401
- Issue date Jul 18, 1989
- Gaz de France
- Denis Devilleger
- E21 - EARTH DRILLING MINING

Patents Applicationslast 30 patents

Information Patent Application
METHOD OF IN SITU REPAIR OF A WELLHEAD BASE FLANGE
- Publication number 20120240373
- Publication date Sep 27, 2012
- STORENGY
- Denis DEVILLEGER
- E21 - EARTH DRILLING MINING