Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 10988906 | Controlling backflow from drilling with hollow rebar and grouting | — | 2021-04-27 |
| 10774493 | Hollow rebar for post-grouting the base of reinforced concrete drilled shafts | — | 2020-09-15 |
| 9074473 | Hollow rebar for crosshole sonic logging access tubes and longitudinal concrete reinforcing in drilled shafts | Josef K. Alter | 2015-07-07 |