Issued Patents All Time
Showing 1–8 of 8 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7270046 | Integrated valve assembly and computer controller for a distributed hydraulic control system | Dwight B. Stephenson, Peter A. Jahnke | 2007-09-18 |
| D542307 | Hydraulic valve manifold block | Dwight B. Stephenson, Peter A. Jahnke | 2007-05-08 |
| D540347 | Electronic controller and hydraulic valve block assembly | Dwight B. Stephenson, Peter A. Jahnke | 2007-04-10 |
| 6869060 | Hydraulic poppet valve with force feedback | Dennis R. Barber | 2005-03-22 |
| 6745992 | Pilot operated control valve having a poppet with integral pressure compensating mechanism | Xiaolong Yang, Joseph L. Pfaff | 2004-06-08 |
| 6328275 | Bidirectional pilot operated control valve | Xiaolong Yang, Dwight B. Stephenson | 2001-12-11 |
| 5791142 | Hydraulic control valve system with split pressure compensator | Michael Layne, Raud A. Wilke, Leif Pedersen | 1998-08-11 |
| 4627468 | Hydraulic control valve with manual override | Raud A. Wilke | 1986-12-09 |