JH

John F. Hunka

Schlumberger Technology: 12 patents #467 of 7,293Top 7%
Overall (All Time): #424,389 of 4,157,543Top 15%
12
Patents All Time

Issued Patents All Time

Patent #TitleCo-InventorsDate
7812608 Extra bucking coils to balance induction arrays Andrei I. Davydychev, Thomas D. Barber, Scott S. Chesser, Bulent Finci, Jingjing Karen Sun +2 more 2010-10-12
7692428 Retrievable formation resistivity tool Brian Clark, Mark Frey, David L. Smith, Dhananjay Ramaswamy, Anthony Collins +1 more 2010-04-06
7679366 Selectable tap induction coil Scott S. Chesser, Richard D. Ward, Bulent Finci, Andrei I. Davydychev, William B. Vandermeer 2010-03-16
7671597 Composite encased tool for subsurface measurements Bulent Finci, Scott S. Chesser, Jingjing (Karen) Sun, Denis Lebreton, Richard D. Ward +2 more 2010-03-02
7501829 Extra bucking coils as an alternative way to balance induction arrays Andrei I. Davydychev, Thomas D. Barber, Scott S. Chesser, Bulent Finci, Jingjing (Karen) Sun +2 more 2009-03-10
7417436 Selectable tap induction coil Scott S. Chesser, Richard D. Ward, Bulent Finci, Andrei I. Davydychev, William B. Vandermeer 2008-08-26
7187297 Methods for sealing openings in tubulars Brian Clark, Mark Frey, David L. Smith, Dhananjay Ramaswamy, Anthony Collins +1 more 2007-03-06
6975243 Downhole tubular with openings for signal passage Brian Clark, Mark Frey, David L. Smith, Dhananjay Ramaswamy, Anthony Collins +1 more 2005-12-13
6903660 Inductively-coupled system for receiving a run-in tool Brian Clark, Mark Frey, David L. Smith, Dhananjay Ramaswamy, Anthony Collins +1 more 2005-06-07
6577244 Method and apparatus for downhole signal communication and measurement through a metal tubular Brian Clark, Mark Frey, David L. Smith, Dhananjay Ramaswamy, Anthony Collins +1 more 2003-06-10
4873488 Induction logging sonde with metallic support having a coaxial insulating sleeve member Thomas D. Barber, Richard N. Chandler 1989-10-10
4651101 Induction logging sonde with metallic support Thomas D. Barber, Richard N. Chandler 1987-03-17