| # | Country | Total Patents | |
|---|---|---|---|
| #1 | Germany | 11 |
| # | Industry | |
|---|---|---|
| #1 | Measurement | |
| #2 | Chemical engineering |
| # | Technology | |
|---|---|---|
| #1 | Analysing materials | |
| #2 | Chemical leather treatments | |
| #3 | Chemical or physical processes | |
| #4 | Measuring volume |
| # | Name | Total Patents |
|---|---|---|
| #1 | Grassmann Dr Wolfgang | 7 |
| #2 | Hannig Dr Kurt | 3 |
| #3 | Endres Dr Horst | 1 |
| #4 | Hannig Kurt | 1 |
| #5 | Brockhaus Dipl-Chem Dr Rudolf | 1 |
| #6 | Endres Dipl-Chem Dr Horst | 1 |
| #7 | Deffner Dipl-Chem Gottfried | 1 |
| #8 | Hoermann Dr Helmut | 1 |
| #9 | Grassmann Dr W | 1 |