Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 10816431 | Leak detection system for underground access chambers using conductivity | Charles A. Hansen, Sean Blottie, Cory Peters, Sonja Hansen, Bianca Hansen +1 more | 2020-10-27 |
| 10557772 | Multi-sensor inspection for identification of pressurized pipe defects that leak | Charles A. Hansen | 2020-02-11 |
| 10451515 | Electric field expansion system for low voltage conductivity inspection | Charles A. Hansen, Cory Peters | 2019-10-22 |
| 9933329 | Multi-sensor inspection for identification of pressurized pipe defects that leak | Charles A. Hansen | 2018-04-03 |
| 5791005 | Scarifying and deburring tool | Heinz Holzhaeusser, Paul M. Miller, David J. Swift | 1998-08-11 |