| # | Country | Total Patents | |
|---|---|---|---|
| #1 | Netherlands | 5 | |
| #2 | Belgium | 3 | |
| #3 | Germany | 2 | |
| #4 | United States | 1 |
| # | Industry | |
|---|---|---|
| #1 | Basic materials chemistry | |
| #2 | Materials and metallurgy | |
| #3 | Macromolecular chemistry and polymers | |
| #4 | Thermal processes |
| # | Technology | |
|---|---|---|
| #1 | Inorganic treatment materials | |
| #2 | Inorganic compounds | |
| #3 | Compounding ingredients | |
| #4 | Burners |
| # | Name | Total Patents |
|---|---|---|
| #1 | Heller, George Louis | 2 |
| #2 | Braendle, Harold A. | 1 |
| #3 | Braendle, Harold Anthes | 1 |
| Publication | Filing date | Title |
|---|---|---|
| US2735753A | Manufacture of carbon black |