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Johan-Fredrik SYNNEVAAG
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Oslo, NO
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Patents Grants
last 30 patents
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Patent Grant
Removing ghost reflections from marine seismic data
Patent number
9,594,180
Issue date
Mar 14, 2017
CGG MARINE (NORWAY) AS
Johan-Fredrik Synnevaag
G01 - MEASURING TESTING
Information
Patent Grant
Seismic source arrays
Patent number
8,205,711
Issue date
Jun 26, 2012
WesternGeco L. L. C.
Jon-Fredrik Hopperstad
G01 - MEASURING TESTING
Information
Patent Grant
Method and apparatus for controlling the acoustic output of an airgun
Patent number
7,321,527
Issue date
Jan 22, 2008
WesternGeco, LLC
Jon-Fredrik Hopperstad
G01 - MEASURING TESTING
Patents Applications
last 30 patents
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Patent Application
REMOVING GHOST REFLECTIONS FROM MARINE SEISMIC DATA
Publication number
20140121981
Publication date
May 1, 2014
CGG MARINE (NORWAY) As
Johan-Fredrik SYNNEVAAG
G01 - MEASURING TESTING
Information
Patent Application
Method and apparatus for controlling the acoustic output of an airgun
Publication number
20060050614
Publication date
Mar 9, 2006
Jon-Fredrik Hopperstad
G01 - MEASURING TESTING
Information
Patent Application
Marine seismic surveying
Publication number
20040136266
Publication date
Jul 15, 2004
WesternGeco
Martin Howlid
G01 - MEASURING TESTING
Information
Patent Application
Seismic source arrays
Publication number
20030168277
Publication date
Sep 11, 2003
Jon-Fredrik Hopperstad
G01 - MEASURING TESTING