Issued Patents All Time
Showing 1–5 of 5 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 10837857 | Gas leak search using a test gas spray device | Hjalmar Bruhns, Ernst Franke, Jörn Liebich, Norbert Moser, Jochen Puchalla-König +3 more | 2020-11-17 |
| 8416091 | Sniffing probe | Randolf Rolff, Jörn Liebich, Norbert Moser, Norbert Rolff | 2013-04-09 |
| 7802461 | Method and device for detecting leaks | Jörn Liebich, Randolf Rolff | 2010-09-28 |
| 7331216 | Leak rate measuring device | Ludolf Gerdau, Randolf Rolff | 2008-02-19 |
| 7030381 | Method for detecting a gas using an infrared gas analyser and gas analyser suitable for carrying out said method | Randolf Rolff, Gerhard Küster, Ralf Hirche | 2006-04-18 |