Top Inventors at Hydrometer Gmbh All Time
| Rank | Name | Patents |
|---|---|---|
| 1 | Harald Kroemer | 5 |
| 2 | Hans-Michael Sonnenberg | 5 |
| 3 | Wilhelm Ofelein | 3 |
| #4 | Axel Schmidt-Schoenian | 2 |
| #5 | Gunter Hauenstein | 2 |
| #6 | Wilhelm Oefelein | 2 |
| #7 | Beat Kramer | 1 |
| #8 | Christian Schirm | 1 |
| #9 | Daniel Matter | 1 |
| #10 | Gerhard Dietz | 1 |
| #11 | Horst Behlen | 1 |
| #12 | Horst Ziegler | 1 |
| #13 | Karl-Otto Schmidt | 1 |
| #14 | Ottmar Oeder | 1 |
| #15 | Robert D. Braun | 1 |
| #16 | Roland Horn | 1 |
| #17 | Roland Messthaler | 1 |
| #18 | Steffen Lacher | 1 |
| #19 | Thomas Kleiner | 1 |
| #20 | Tino Hofmann | 1 |
| #21 | Ulrich Eff | 1 |
| #22 | Ulrich Gaugler | 1 |
| #23 | Walter Klass | 1 |
| #24 | Werner Schloetterer | 1 |
| #25 | Ewald Lacher | 1 |
| #26 | Andreas Hegendoerfer | 1 |