Issued Patents All Time
Showing 1–25 of 26 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 10703603 | Operating a cyclical transport system based on an equal cycle time | Qinghua Zheng, Florian Dignath, Erhard Lampersberger | 2020-07-07 |
| 9528355 | Enhanced oil production using control of well casing gas pressure | James P. McCrickard, Ronald G. Peterson, Michael Dry, Theresa Smigura | 2016-12-27 |
| 9494504 | Dual component density sampler apparatus | James P. McCrickard, Ronald G. Peterson, Michael A. MacDonald, Michael Dry | 2016-11-15 |
| 8727749 | Cranked rod pump method | Ronald G. Peterson, Michael A. MacDonald, Michael Dry | 2014-05-20 |
| 8708671 | Cranked rod pump apparatus and method | Benjamin J. Gregory, Ronald G. Peterson, Michael A. MacDonald, Michael Dry | 2014-04-29 |
| 8641390 | Linear rod pump apparatus and method | Robb G. Anderson, Ronald G. Peterson, Michael A. MacDonald | 2014-02-04 |
| 8555984 | Linear rod pump operating method | Robb G. Anderson, Ronald G. Peterson, Michael A. MacDonald | 2013-10-15 |
| 8444393 | Rod pump control system including parameter estimator | Ronald G. Peterson, Mark E. Garlow, Theresa Smigura | 2013-05-21 |
| 8417483 | Determination and control of wellbore fluid level, output flow, and desired pump operating speed, using a control system for a centrifugal pump disposed within the wellbore | Robb G. Anderson | 2013-04-09 |
| 8384318 | Induction motor torque control in a pumping system | Michael Dry, Mark E. Garlow, Michael O. Lucas, Michael A. MacDonald, Ronald G. Peterson | 2013-02-26 |
| 8328536 | Cranked rod pump apparatus | Ronald G. Peterson, Michael A. MacDonald, Michael Dry | 2012-12-11 |
| 8249826 | Determination and control of wellbore fluid level, output flow, and desired pump operating speed, using a control system for a centrifugal pump disposed within the wellbore | Robb G. Anderson | 2012-08-21 |
| 8180593 | Determination and control of wellbore fluid level, output flow, and desired pump operating speed, using a control system for a centrifugal pump disposed within the wellbore | Robb G. Anderson | 2012-05-15 |
| 8152492 | Linear rod pump apparatus and method | Robb G. Anderson, Ronald G. Peterson, Michael A. MacDonald | 2012-04-10 |
| 8080950 | Induction motor torque control in a pumping system | Michael Dry, Mark E. Garlow, Michael O. Lucas, Michael A. MacDonald, Ronald G. Peterson | 2011-12-20 |
| 7921689 | Pneumatic biasing of a linear actuator and implementations thereof | Robb G. Anderson, James P. McCrickard | 2011-04-12 |
| 7748308 | Pneumatic biasing of a linear actuator and implementations thereof | Robb G. Anderson, James P. McCrickard | 2010-07-06 |
| 7668694 | Determination and control of wellbore fluid level, output flow, and desired pump operating speed, using a control system for a centrifugal pump disposed within the wellbore | Robb G. Anderson | 2010-02-23 |
| 7558699 | Control system for centrifugal pumps | Robb G. Anderson, Steven J. Olson | 2009-07-07 |
| 7168924 | Rod pump control system including parameter estimator | Ronald G. Peterson, Mark E. Garlow, Theresa Smigura | 2007-01-30 |
| 7117120 | Control system for centrifugal pumps | Robb G. Anderson, Steven J. Olson | 2006-10-03 |
| 6285014 | Downhole induction heating tool for enhanced oil recovery | Stephen J. Garnall, David Seemab Kahn, Bruce C. W. McGee, Alan J. Sallwasser, George Stapleton +1 more | 2001-09-04 |
| 4795956 | Web motion converter | — | 1989-01-03 |
| 4704568 | Linear induction motor transport system | James A. Beck | 1987-11-03 |
| 4491777 | Position control of fabricating materials | Donald B. Lawson | 1985-01-01 |