| # | Industry | |
|---|---|---|
| #1 | Chemical engineering | |
| #2 | Machines | |
| #3 | Civil engineering | |
| #4 | Measurement | |
| #5 | Materials and metallurgy | |
| #6 | Packaging and shipping | |
| #7 | Thermal processes |
| # | Technology | |
|---|---|---|
| #1 | Milling | |
| #2 | Swimming pools | |
| #3 | Separation | |
| #4 | Furnaces | |
| #5 | Transport or storage devices | |
| #6 | Separating solids | |
| #7 | Analysing materials | |
| #8 | Building materials |
| # | Name | Total Patents |
|---|---|---|
| #1 | Berz Dipl-Ing Max | 8 |
| #2 | Berz Dipl-Ing Wolfgang | 3 |
| #3 | Rehmer Dipl-Ing Helmut | 2 |
| Publication | Filing date | Title |
|---|---|---|
| DE573764C | Procedure for determining the degree of fineness of a dusty or grainy material |