Issued Patents All Time
Showing 1–8 of 8 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 10508747 | Apparatus to bias spool valves using supply pressure | Christopher S. Metschke, Bradley Dale Busse | 2019-12-17 |
| 10228066 | Vent assembly and method for a digital valve positioner | Kenneth W. Junk, Shannon Eugene Jelken, Francis C. Roessler, Christopher J. Mack | 2019-03-12 |
| 9989159 | Vent assembly and method for a digital valve positioner | Kenneth W. Junk, Shannon Eugene Jelken, Francis C. Roessler, Christopher J. Mack | 2018-06-05 |
| 9625043 | Apparatus to bias spool valves using supply pressure | Christopher S. Metschke, Bradley Dale Busse | 2017-04-18 |
| 7190159 | Integral hall effect limit switch for control valve stem position sensor | Curt Galbreath, Stephen G. Seberger | 2007-03-13 |
| 6644332 | Method and apparatus for multiple-input-multiple-output control of a valve/actuator plant | — | 2003-11-11 |
| 5083461 | Low friction trunnion bearing and high pressure seal | — | 1992-01-28 |
| 4974625 | Four mode pneumatic relay | Steve B. Paullus | 1990-12-04 |