Issued Patents All Time
Showing 1–7 of 7 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 11396022 | Mono roller grinding mill | — | 2022-07-26 |
| 10343174 | Rock mill lifter | — | 2019-07-09 |
| 9687853 | Conjugate anvil hammer mill | — | 2017-06-27 |
| 9340360 | Superelastic low rolling resistance conveyor belt | Yijun Zhang, Robin Bovaird Steven | 2016-05-17 |
| 8955778 | Conjugate anvil hammer mill | — | 2015-02-17 |
| 7942259 | Tubular conveyor belt | Robin Bovaird Steven, Yijin Zhang | 2011-05-17 |
| 7497395 | Rock grinding mill and method | — | 2009-03-03 |