Issued Patents All Time
Showing 1–25 of 31 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 11389858 | Cold rolling devices and cold rolled rotary shouldered connection threads | Rakesh Singh, Ke Ken Li, Michael Hui Du, Fei Song, Stephen Ray Stafford +2 more | 2022-07-19 |
| 11391098 | Double-shouldered connection for drilling tubulars with large inside diameter | — | 2022-07-19 |
| 11105167 | Method and apparatus for generating fluid pressure pulses of adjustable amplitude | Everett Hagar, Robert W. McCullough, Christopher Adam Well, Thomas Clifford Williams | 2021-08-31 |
| 10662722 | Threaded connections and downhole tools incorporating the same | Xiaoge Gan, Ke Chen, Venkatesh Karuppiah, Ke Ken Li, Fei Song +3 more | 2020-05-26 |
| 10612318 | Inductive coupler assembly for downhole transmission line | Darren Wall, Trent Hassell, Ted Louis Christiansen, Craig Thorne, Sterling Beck +2 more | 2020-04-07 |
| 10160033 | Cold rolling devices and cold rolled rotary shouldered connection threads | Rakesh Singh, Ke Ken Li, Michael Hui Du, Fei Song, Stephen Ray Stafford +2 more | 2018-12-25 |
| 10145496 | Rotary shouldered connections and thread design | Ke Ken Li, Fei Song, Rakesh Singh, Michael Hui Du, Keith Moriarty | 2018-12-04 |
| 9945223 | Fatigue calculator generation system | Ke Ken Li, Edward George Parkin, Rakesh Singh, Keith Moriarty | 2018-04-17 |
| 8794318 | Formation evaluation instrument and method | Edward Harrigan, Yves Barriol, Andrei I. Davydychev, Andrew Carnegie, Dean Homan +6 more | 2014-08-05 |
| 7798246 | Apparatus and method to control the rotation of a downhole drill bit | — | 2010-09-21 |
| 7692428 | Retrievable formation resistivity tool | Brian Clark, John F. Hunka, Mark Frey, David L. Smith, Dhananjay Ramaswamy +1 more | 2010-04-06 |
| 7586310 | While-drilling apparatus for measuring streaming potentials and determining earth formation characteristics and other useful information | Min-Yi Chen, Brian Clark, Jeffrey A. Tarvin | 2009-09-08 |
| 7466136 | While-drilling methodology for determining earth formation characteristics and other useful information based upon streaming potential measurements | Min-Yi Chen, Brian Clark, Jeffrey A. Tarvin | 2008-12-16 |
| 7388380 | While-drilling apparatus for measuring streaming potentials and determining earth formation characteristics and other useful information | Min-Yi Chen, Brian Clark, Jeffrey A. Tarvin | 2008-06-17 |
| 7301345 | While-drilling methodology for estimating formation pressure based upon streaming potential measurements | Min-Yi Chen, Brian Clark, Jeffrey A. Tarvin | 2007-11-27 |
| 7230542 | Streamlining data transfer to/from logging while drilling tools | Jan W. Smits | 2007-06-12 |
| 7187297 | Methods for sealing openings in tubulars | Brian Clark, John F. Hunka, Mark Frey, David L. Smith, Dhananjay Ramaswamy +1 more | 2007-03-06 |
| D516931 | Clock face | — | 2006-03-14 |
| 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 |
| D509846 | Card | — | 2005-09-20 |
| 6932680 | Tool mounting assembly | — | 2005-08-23 |
| 6930652 | Simplified antenna structures for logging tools | David L. Smith | 2005-08-16 |
| 6912465 | System and method for determining downhole clock drift | Andrew Hawthorn, Cengiz Esmersoy | 2005-06-28 |
| 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 |
| 6863127 | System and method for making an opening in a subsurface tubular for reservoir monitoring | Brian Clark, Martin G. Luling, Mark Frey, Dhananjay Ramaswamy | 2005-03-08 |