Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 9683667 | Control valve trim | — | 2017-06-20 |
| 8585011 | Control valve trim | — | 2013-11-19 |
| 8424567 | Bi-directional valve with cavity pressure relief | — | 2013-04-23 |
| 7726339 | Seal cartridge control valve | — | 2010-06-01 |
| 7363941 | Fluid control valve device | — | 2008-04-29 |
| 6988708 | Low torque ball valve seat | — | 2006-01-24 |
| 6981691 | Dual segment ball valve | — | 2006-01-03 |
| 5117858 | Top entry ball valves with cam adjustable seats | Robert H. Osthues | 1992-06-02 |
| 5061416 | Process for the manufacture of friable silicon nitride bodies | Craig A. Willkens, Normand D. Corbin | 1991-10-29 |