Issued Patents All Time
Showing 1–6 of 6 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 10647904 | Compressive grout mix for use in absorbing compressive or deformation stresses of subterranean formations | — | 2020-05-12 |
| 10315955 | Annular fill compressible grout mix for use behind pre-cast concrete segment installed in time-dependent deformation tunnels | — | 2019-06-11 |
| 10316239 | Compressible grout mix for use in absorbing compressive or deformation stresses of subterranean formations | — | 2019-06-11 |
| 8613567 | Clip and method for joining steel ribs used as tunnel liner supports | — | 2013-12-24 |
| 8562254 | Door arrangement for a tunneling machine | — | 2013-10-22 |
| 6017095 | Tunnel boring machine with crusher | — | 2000-01-25 |