Issued Patents All Time
Showing 1–25 of 25 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 10087690 | Apparatus and method for reducing torque on a drill string | Keith T. Lutgring, Matthew Weber, Ira Eugene Hining, Jean Buytaert | 2018-10-02 |
| 9567815 | Load ring for lifting by elevator, of casing having an upset | Keith T. Lutgring, Braxton I. Moody, V, John K. M. Saichuk, Samuel P. Hawkins, III | 2017-02-14 |
| 8936292 | Load ring for lifting by elevator, of cassing having no upset | Keith T. Lutgring, Braxton I. Moody, V, John K. M. Saichuk, Samuel P. Hawkins, III | 2015-01-20 |
| 8708043 | Methods and multi-purpose apparatus for dispensing and circulating fluid in wellbore casing | Donald E. Mosing, David L. Sipos, Samuel P. Hawkins, III, Keith T. Lutgring | 2014-04-29 |
| 8424604 | Methods and devices for forming a wellbore with casing | Donald E. Mosing, David L. Sipos, Samuel P. Hawkins, III, Keith T. Lutgring | 2013-04-23 |
| 8348320 | Load ring for lifting by elevator, of casing having no upset | Keith T. Lutgring, Braxton I. Moody, V, John K. M. Saichuk, Samuel P. Hawkins, III | 2013-01-08 |
| 8316930 | Downhole tubular connector | Matthew Clubb, Dougal Hugo Brown, Alan Payne, Stuart Card, George Swietlik +1 more | 2012-11-27 |
| 8096357 | Casing make-up and running tool adapted for fluid and cement control | Keith T. Lutgring, Samuel P. Hawkins, III | 2012-01-17 |
| 8082982 | Methods and devices for forming a wellbore with casing | Donald E. Mosing, Samuel P. Hawkins, III, David L. Sipos, Keith T. Lutgring | 2011-12-27 |
| 8047278 | Hydraulic connector apparatuses and methods of use with downhole tubulars | George Swietlik, Robert Large | 2011-11-01 |
| 7874361 | Methods and devices for forming a wellbore with casing | Donald E. Mosing, Samuel P. Hawkins, III, David L. Sipos, Keith T. Lutgring | 2011-01-25 |
| 7866390 | Casing make-up and running tool adapted for fluid and cement control | Keith T. Lutgring, Samuel P. Hawkins, III | 2011-01-11 |
| RE41979 | Flow control apparatus and method | Braxton I. Moody, V, Keith T. Lutgring, Donald E. Mosing | 2010-12-07 |
| 7635026 | Methods and devices for forming a wellbore with casing | Donald E. Mosing, Samuel P. Hawkins, III, David L. Sipos, Keith T. Lutgring | 2009-12-22 |
| 7370698 | Method and apparatus for transferring rig weight to tubulars | Donald E. Mosing, Samuel P. Hawkins, III, David L. Sipos, Keith T. Lutgring | 2008-05-13 |
| 7357434 | Load ring for lifting by elevator, of casing having no upset | Keith T. Lutgring, Braxton I. Moody, V., John K. M. Saichuk, Samuel P. Hawkins, III | 2008-04-15 |
| 7159619 | Thread protector for use on pin end of oilfield tubulars | Johnny Firmin Elkins, Keith T. Lutgring, John K. M. Saichuk, Braxton I. Moody, V, Samuel P. Hawkins, III | 2007-01-09 |
| 7096948 | Method and multi-purpose apparatus for dispensing and circulating fluid in wellbore casing | Donald E. Mosing, Samuel P. Hawkins, III, David L. Sipos, Keith T. Lutgring | 2006-08-29 |
| 6595288 | Method and multi-purpose apparatus for dispensing and circulating fluid in wellbore casing | Donald E. Mosing, Samuel P. Hawkins, III, David L. Sipos, Keith T. Lutgring | 2003-07-22 |
| 6571880 | Method and multi-purpose apparatus for control of fluid in wellbore casing | Charles Butterfield, Robert Bates, David F. Laurel, Samuel P. Hawkins, III, Keith T. Lutgring | 2003-06-03 |
| 6508312 | Flow control apparatus and method | Braxton I. Moody, V, Keith T. Lutgring, Donald E. Mosing | 2003-01-21 |
| 6425442 | Anti-rotation device for use with well tools | Keith T. Lutgring, Samuel P. Hawkins, III | 2002-07-30 |
| 6302199 | Mechanism for dropping a plurality of balls into tubulars used in drilling, completion and workover of oil, gas and geothermal wells | Samuel P. Hawkins, III, Keith T. Lutgring | 2001-10-16 |
| 6279654 | Method and multi-purpose apparatus for dispensing and circulating fluid in wellbore casing | Donald E. Mosing, Samuel P. Hawkins, III, David L. Sipos, Keith T. Lutgring | 2001-08-28 |
| 5918673 | Method and multi-purpose apparatus for dispensing and circulating fluid in wellbore casing | Samuel P. Hawkins, III, Donald E. Mosing, David L. Sipos, Keith T. Lutgring | 1999-07-06 |