Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 10837857 | Gas leak search using a test gas spray device | Hjalmar Bruhns, Ernst Franke, Ralf Kilian, Jörn Liebich, Jochen Puchalla-König +3 more | 2020-11-17 |
| 8537019 | Sniffing leak detector | Randolf Rolff, Sandra Seitz | 2013-09-17 |
| 8416091 | Sniffing probe | Randolf Rolff, Ralf Kilian, Jörn Liebich, Norbert Rolff | 2013-04-09 |