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Akira Otsuka
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MACHIDA-SHI, JP
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Patents Grants
last 30 patents
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Patent Grant
Methods and apparatus to measure fluid flow rates
Patent number
8,109,155
Issue date
Feb 7, 2012
Schlumberger Technology Corporation
Akira Otsuka
G01 - MEASURING TESTING
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Patent Grant
Real-time calibration for downhole spectrometer
Patent number
7,609,380
Issue date
Oct 27, 2009
Schlumberger Technology Corporation
Stephane Vannuffelen
G01 - MEASURING TESTING
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Patent Grant
Sonic logging tool including receiver and spacer structure
Patent number
7,336,562
Issue date
Feb 26, 2008
Schlumberger Technology Corporation
David Hoyle
G01 - MEASURING TESTING
Patents Applications
last 30 patents
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Patent Application
METHODS AND APPARATUS TO MEASURE FLUID FLOW RATES
Publication number
20100212889
Publication date
Aug 26, 2010
SCHLUMBERGER TECHNOLOGY CORPORATION
Akira Otsuka
E21 - EARTH DRILLING MINING