Issued Patents All Time
Showing 276–300 of 324 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6504258 | Vibration based downhole power generator | Paul D. Ringgenberg, Clark E. Robison, Robert Michael, Russell Irving Bayh, III | 2003-01-07 |
| 6434084 | Adaptive acoustic channel equalizer & tuning method | — | 2002-08-13 |
| 6408943 | Method and apparatus for placing and interrogating downhole sensors | Clark E. Robison, Russell Irving Bayh, III, Benjamin Stewart, Brian Nutley, Jamie Oag +1 more | 2002-06-25 |
| 6246962 | Method and apparatus for adaptively filtering noise to detect downhole events | John D. Burleson | 2001-06-12 |
| 6236620 | Integrated well drilling and evaluation | H. Kent Beck, Paul D. Ringgenberg, J. Allan Clark, Kevin R. Manke | 2001-05-22 |
| 6192984 | Method of sampling a well using a control valve and/or floating piston | — | 2001-02-27 |
| 6189392 | Fluid sampling apparatus using floating piston | — | 2001-02-20 |
| 6182753 | Well fluid sampling apparatus with isolation valve and check valve | — | 2001-02-06 |
| 6182757 | Method of sampling a well using an isolation valve | — | 2001-02-06 |
| 6073698 | Annulus pressure operated downhole choke and associated methods | Kent F. Beck | 2000-06-13 |
| 6065355 | Non-flashing downhole fluid sampler and method | — | 2000-05-23 |
| 5992520 | Annulus pressure operated downhole choke and associated methods | Kent F. Beck | 1999-11-30 |
| 5887652 | Method and apparatus for bottom-hole testing in open-hole wells | Harold Kent Beck | 1999-03-30 |
| 5826662 | Apparatus for testing and sampling open-hole oil and gas wells | Harold Kent Beck, Paul D. Ringgenberg, Rodney R. Setliff | 1998-10-27 |
| 5813460 | Formation evaluation tool and method for use of the same | Paul D. Ringgenberg, Neal G. Skinner, Margaret C. Waid, Curtis E. Wendler, Robert W. Srubar | 1998-09-29 |
| 5799733 | Early evaluation system with pump and method of servicing a well | Paul D. Ringgenberg, Neal G. Skinner, Curtis E. Wendler, Robert W. Srubar, Margaret C. Waid | 1998-09-01 |
| 5687791 | Method of well-testing by obtaining a non-flashing fluid sample | Harold Kent Beck | 1997-11-18 |
| 5555945 | Early evaluation by fall-off testing | H. Kent Beck, Paul D. Ringgenberg, Ronald L. Hinkie | 1996-09-17 |
| 5490564 | Pressure change signals for remote control of downhole tools | Donald G. Kyle, Neal G. Skinner | 1996-02-13 |
| 5423229 | Apparatus and method for draining high pressure fluid samples without mercury | Paul D. Ringgenberg | 1995-06-13 |
| 5412568 | Remote programming of a downhole tool | — | 1995-05-02 |
| 5375658 | Shut-in tools and method | Craig L. Zitterich, Harold Kent Beck, William L. Bohan | 1994-12-27 |
| 5368100 | Coiled tubing actuated sampler | David Lewandowski | 1994-11-29 |
| 5355960 | Pressure change signals for remote control of downhole tools | Donald G. Kyle, Neal G. Skinner | 1994-10-18 |
| 5353875 | Methods of perforating and testing wells using coiled tubing | Gary O. Harkins | 1994-10-11 |