| # | Country | Total Patents | |
|---|---|---|---|
| #1 | Germany | 17 |
| # | Industry | |
|---|---|---|
| #1 | Materials and metallurgy | |
| #2 | Basic materials chemistry | |
| #3 | Thermal processes | |
| #4 | Foods and drinks |
| # | Technology | |
|---|---|---|
| #1 | Rare-earth metal compounds | |
| #2 | Metal production and refining | |
| #3 | Building materials | |
| #4 | Nitrogenous fertilisers | |
| #5 | Furnaces | |
| #6 | Alkali metal compounds | |
| #7 | Bakery products |
| # | Name | Total Patents |
|---|---|---|
| #1 | Kippe Dr Otto | 6 |
| #2 | Otto Kippe Dr | 2 |