Top Inventors at Philipp Holzmann Ag All Time
| Rank | Name | Patents |
|---|---|---|
| 1 | Wilfried Krabbe | 6 |
| 2 | Hans Schafer | 4 |
| 3 | Joachim Fischer | 3 |
| #4 | Heinz Wind | 2 |
| #5 | Wolfgang Zerna | 2 |
| #6 | Dietmar Kallinich | 1 |
| #7 | Eberhard Muller | 1 |
| #8 | Friedrich Lehmann | 1 |
| #9 | Karl-Peter Hoffmann | 1 |
| #10 | Otmar Schreyegg | 1 |
| #11 | Siegfried Brandl | 1 |
| #12 | Theodor Baumann | 1 |
| #13 | Walter Simon | 1 |
| #14 | Walter Stiller | 1 |
| #15 | Wolfram Illgner | 1 |
| #16 | Wolfgand Kahlert | 1 |
| #17 | Hans Pause | 1 |
| #18 | Rudolf Bartoszek | 1 |
| #19 | Andreas Muonning | 1 |
| #20 | Michael Gaschler | 1 |
| #21 | Hansgeorg Balthaus | 1 |
| #22 | Andreas Monning | 1 |