| # | Country | Total Patents | |
|---|---|---|---|
| #1 | Switzerland | 12 | |
| #2 | Germany | 6 | |
| #3 | Austria | 4 | |
| #4 | Denmark | 4 |
| # | Industry | |
|---|---|---|
| #1 | Mechanical elements | |
| #2 | Thermal processes | |
| #3 | Environmental technology | |
| #4 | Furniture and games |
| # | Technology | |
|---|---|---|
| #1 | Venting or aerating devices | |
| #2 | Steam traps | |
| #3 | Domestic heating systems | |
| #4 | Steam generation | |
| #5 | Pistons and sealings | |
| #6 | Springs | |
| #7 | Kitchen equipment | |
| #8 | Water treatment |
| # | Name | Total Patents |
|---|---|---|
| #1 | Gerdts Gustav Friedrich | 14 |
| #2 | Gustav Friedrich Gerdts | 11 |
| #3 | Pape Hans-Martin Dr-Ing | 3 |
| #4 | Letzas Rudolf Dipl-Ing | 2 |
| #5 | Schulze Johann | 2 |
| #6 | Mueller Richard | 1 |
| #7 | Behrends Richard | 1 |
| #8 | Herker Kurt | 1 |
| #9 | Pape Hans-Martin | 1 |
| #10 | Foerster Bernhard | 1 |