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Sergio Kostek
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Ridgefield, CT, US
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last 30 patents
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Patent Grant
Method of and apparatus for sonic logging while drilling a borehole...
Patent number
5,852,587
Issue date
Dec 22, 1998
Schlumberger Technology Corporation
Sergio Kostek
G01 - MEASURING TESTING
Information
Patent Grant
Method of sonic logging while drilling a borehole traversing an ear...
Patent number
5,796,677
Issue date
Aug 18, 1998
Schlumberger Technology Corporation
Sergio Kostek
G01 - MEASURING TESTING
Information
Patent Grant
Attentuator for borehole acoustic waves
Patent number
5,646,379
Issue date
Jul 8, 1997
Schlumberger Technology Corporation
Chuar-Jian Hsu
G10 - MUSICAL INSTRUMENTS ACOUSTICS
Information
Patent Grant
Measurement of formation characteristics using acoustic borehole to...
Patent number
5,521,882
Issue date
May 28, 1996
Schlumberger Technology Corporation
Ralph D'Angelo
G01 - MEASURING TESTING
Information
Patent Grant
Measurement of nonlinear formation parameters using sonic borehole...
Patent number
5,485,431
Issue date
Jan 16, 1996
Schlumberger Technology Corporation
David L. Johnson
G01 - MEASURING TESTING
Information
Patent Grant
Measurement of nonlinear properties of formation using sonic boreho...
Patent number
5,475,650
Issue date
Dec 12, 1995
Schlumberger Technology Corporation
Bikash K. Sinha
G01 - MEASURING TESTING
Information
Patent Grant
Identification of stress induced anisotropy in formations
Patent number
5,398,215
Issue date
Mar 14, 1995
Schlumberger Technology Corporation
Bikash K. Sinha
G01 - MEASURING TESTING
Information
Patent Grant
Receiver apparatus for use in logging while drilling
Patent number
5,309,404
Issue date
May 3, 1994
Schlumberger Technology Corporation
Sergio Kostek
G01 - MEASURING TESTING