Issued Patents All Time
Showing 26–50 of 64 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 10240687 | Methods and apparatus of testing a solenoid valve of an emergency valve via a positioner | Shannon Eugene Jelken, Jimmie L. Snowbarger, Bruce F. Grumstrup | 2019-03-26 |
| 10234058 | Methods and apparatus of assessing a test of a solenoid valve via a positioner | Shannon Eugene Jelken | 2019-03-19 |
| 10228066 | Vent assembly and method for a digital valve positioner | Richard J. Winkler, Shannon Eugene Jelken, Francis C. Roessler, Christopher J. Mack | 2019-03-12 |
| 10041610 | Methods and apparatus of stabilizing a valve positioner when testing a solenoid valve | Shannon Eugene Jelken | 2018-08-07 |
| 9989159 | Vent assembly and method for a digital valve positioner | Richard J. Winkler, Shannon Eugene Jelken, Francis C. Roessler, Christopher J. Mack | 2018-06-05 |
| 9893770 | Base station for gathering data from localized sensors | Annette Lynn Latwesen | 2018-02-13 |
| 9881250 | Methods and apparatus for RFID communications in a process control system | Michel K. Lovell | 2018-01-30 |
| 9811081 | Emergency test control panel device, system and method | — | 2017-11-07 |
| 9752599 | Methods and apparatus to partial stroke test valves using pressure control | — | 2017-09-05 |
| 9677578 | Volume booster with stabilized trim | Michel K. Lovell, Ryan J. Jwanouskos, Gary L. Scott | 2017-06-13 |
| 9611873 | Pressure control for partial stroke tests | — | 2017-04-04 |
| 9411321 | Methods and system for minor loop feedback fallback | — | 2016-08-09 |
| 9335762 | Emergency test control panel device, system and method | — | 2016-05-10 |
| 9201416 | Asset data modules including an integral near field communication interface | Annette Lynn Latwesen, Duncan Schleiss, Peter Zornio | 2015-12-01 |
| 9188140 | Bypass arrangement for valve actuator | — | 2015-11-17 |
| 9124999 | Method and apparatus for wireless communications in a process control or monitoring environment | — | 2015-09-01 |
| 9074695 | Volume booster with discrete capacity adjustment | Michel K. Lovell, Ryan J. Jwanouskos | 2015-07-07 |
| 9068902 | Methods and apparatus for evaluating vibration resistance of a component of a fluid control valve | Michel K. Lovell | 2015-06-30 |
| 9032986 | Volume booster with variable asymmetry | Michel K. Lovell, Ryan J. Jwanouskos | 2015-05-19 |
| 9013412 | User interface for a portable communicator for use in a process control environment | — | 2015-04-21 |
| 9008804 | Method and apparatus for operating field devices via a portable communicator | Bruce F. Grumstrup | 2015-04-14 |
| 8631826 | Volume booster with stabilized trim | Michel K. Lovell, Ryan J. Jwanouskos, Gary L. Scott, Mark Stiehl | 2014-01-21 |
| 7917233 | Lead-lag filter arrangement for electro-pneumatic control loops | Annette Lynn Latwesen | 2011-03-29 |
| 7845268 | Asymmetric volume booster arrangement for valve actuators | — | 2010-12-07 |
| 7609056 | Apparatus to determine the position of an actuator | Michel K. Lovell, Ronald F. Hurd, Steven B. Paullus | 2009-10-27 |