Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 11904501 | Mobile aggregate hopper with arcuate side walls | Greg Koppelaar, Kevin Koppelaar, Ron Dorombozi, Gregory D. Gall, Nathan den Hollander | 2024-02-20 |
| 11518065 | Mobile aggregate hopper with arcuate side walls | Greg Koppelaar, Kevin Koppelaar, Ron Dorombozi, Gregory D. Gall, Nathan den Hollander | 2022-12-06 |