Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5328617 | Air-assist discharge of filter press cake | Joel D. De Haan, Daniel De Haan, Gregory De Haan, David J. Spyker, Wesley G. Koops | 1994-07-12 |
| 5172492 | Batch-type dryer | Thomas W. Peterson, John Vanden Bos | 1992-12-22 |