Issued Patents All Time
Showing 1–8 of 8 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 9120538 | Flexible joint for solid carbon rigging | Eric R. D. Hall, Thomas E. Derecktor, Steven J. Winckler | 2015-09-01 |
| 8196595 | Safety override circuit for pneumatic positioner and method of use thereof | Mark Vincent Chester, Alex Legere | 2012-06-12 |
| 7661439 | Safety override circuit for pneumatic positioner and method of use thereof | Mark Vincent Chester, Alex Legere | 2010-02-16 |
| 7493195 | Fluid regulation control | Harold Randall Smart | 2009-02-17 |
| 7480487 | Power regulation for field instruments | Harold Randall Smart | 2009-01-20 |
| 6745084 | Valve positioner system | Henry W. Boger, Christopher Colwell, Larry Gene Schoonover, Raymond Villier, Denis Vital +2 more | 2004-06-01 |
| 6453261 | Valve positioner system | Henry W. Boger, Christopher Colwell, Larry Gene Schoonover, Raymond Villier, Denis Vital +2 more | 2002-09-17 |
| 6272401 | Valve positioner system | Henry W. Boger, Christopher Colwell, Larry Gene Schoonover, Raymond Villier, Denis Vital +2 more | 2001-08-07 |