Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 11268256 | Culvert system with flexible toe wall | Brian Flint | 2022-03-08 |
| 11174614 | Metal foundation system for culverts, buried bridges and other structures | Brian Flint, Matthew L. Westrich | 2021-11-16 |
| 10378164 | Reinforcement system and method for corrugated plate structures | Brian Flint, Timothy J. Cormier | 2019-08-13 |
| 9725873 | Secondary containment system | Timothy J. Cormier | 2017-08-08 |
| 9290895 | Corrugated metal plate assembly system and method | Timothy J. Cormier | 2016-03-22 |
| 8795777 | Mine shaft liner plate system and method | Vernon B. Cameron, Mark J. Swarny | 2014-08-05 |
| 5720577 | Box culvert | Allan P. Schoulties | 1998-02-24 |