Issued Patents All Time
Showing 25 most recent of 34 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 11499381 | Data transmission system | Saad Bargach, Madhusudhan Nagula | 2022-11-15 |
| 10822884 | Data transmission system | Saad Bargach, Madhusudhan Nagula | 2020-11-03 |
| 10760414 | Data transmission system | Saad Bargach | 2020-09-01 |
| 10641050 | Data transmission system | Saad Bargach, Madhusudhan Nagula | 2020-05-05 |
| 9657561 | Downhole power conversion and management using a dynamically variable displacement pump | Saad Bargach, Raymond V. Nold, III, James Patrick Massey, Jon A. Brunetti | 2017-05-23 |
| 9650834 | Downhole apparatus and method for torsional oscillation abatement | Saad Bargach, Raymond V. Nold, III, James Patrick Massey, Jon A. Brunetti | 2017-05-16 |
| 9464482 | Rotary steerable drilling tool | Saad Bargach, Raymond V. Nold, III, James Patrick Massey, Jon A. Brunetti | 2016-10-11 |
| 9316072 | Valve for communication of a measurement while drilling system | John P. Rogers, Robert Rudolph Kirby, Eugene J. Linyaev | 2016-04-19 |
| 8813844 | System and method for drilling lateral boreholes | Christopher Hopkins, Niina Nobuyoshi | 2014-08-26 |
| 8570045 | Drilling system for making LWD measurements ahead of the bit | Borislav J. Tchakarov, Ricki Don Marshall, Treston Greggory Davis | 2013-10-29 |
| 8497673 | Directional resistivity antenna shield | Tsili Wang, Jun Zhang, Jing Li | 2013-07-30 |
| 7692428 | Retrievable formation resistivity tool | Brian Clark, John F. Hunka, Mark Frey, David L. Smith, Dhananjay Ramaswamy +1 more | 2010-04-06 |
| 7619540 | Apparatus and methods for determining isotropic and anisotropic formation resistivity in the presence of invasion | Dean M. Horman, Gerald M. Minerbo, Richard A. Rosthal, Kuo-Chiang Chen | 2009-11-17 |
| 7187297 | Methods for sealing openings in tubulars | Brian Clark, John F. Hunka, Mark Frey, David L. Smith, Dhananjay Ramaswamy +1 more | 2007-03-06 |
| 7091877 | Apparatus and methods for determining isotropic and anisotropic formation resistivity in the presence of invasion | Thomas D. Barber, Dean Homan, Gerald N. Minerbo, Richard A. Rosthal, Kuo-Chiang Chen | 2006-08-15 |
| 6975243 | Downhole tubular with openings for signal passage | Brian Clark, John F. Hunka, Mark Frey, David L. Smith, Dhananjay Ramaswamy +1 more | 2005-12-13 |
| 6933726 | Apparatus and methods for reducing borehole current effects | Kuo-Chiang Chen, Robert C. Smith, Gary A. Hazen, Charles G. Kibbe, Richard A. Rosthal +2 more | 2005-08-23 |
| 6903660 | Inductively-coupled system for receiving a run-in tool | Brian Clark, John F. Hunka, Mark Frey, David L. Smith, Dhananjay Ramaswamy +1 more | 2005-06-07 |
| 6710601 | Borehole current correction for tilted or transverse magnetic dipoles on conductive supports | Richard A. Rosthal, Dean Homan, Thomas D. Barber, Brian Clark, Dzevat Omeragic | 2004-03-23 |
| 6680613 | Method and apparatus for cancellation of borehole effects due to a tilted or transverse magnetic dipole | Richard A. Rosthal, Dean Homan, Thomas D. Barber, Brian Clark, Dzevat Omeragic | 2004-01-20 |
| 6624634 | Borehole current correction methods and apparatus | Richard A. Rosthal, Dean Homan, Thomas D. Barber, Brian Clark, Dzevat Omeragic | 2003-09-23 |
| 6577244 | Method and apparatus for downhole signal communication and measurement through a metal tubular | Brian Clark, John F. Hunka, Mark Frey, David L. Smith, Dhananjay Ramaswamy +1 more | 2003-06-10 |
| 6573722 | Method and apparatus for cancellation of borehole effects due to a tilted or transverse magnetic dipole | Richard A. Rosthal, Dean Homan, Thomas D. Barber, Brian Clark, Dzevat Omeragic | 2003-06-03 |
| 6557794 | Coil shielding method for selective attenuation of an electromagnetic energy field component | Richard A. Rosthal, Dean Homan, Dzevat Omeragic, Brian Clark, Scott S. Chesser +1 more | 2003-05-06 |
| 6380744 | Shielding apparatus for selective attenuation of an electromagnetic energy field component | Brian Clark, Richard A. Rosthal, Dean Homan, Dzevat Omeragic, Scott S. Chesser +1 more | 2002-04-30 |