| # | Country | Total Patents | |
|---|---|---|---|
| #1 | Belgium | 7 | |
| #2 | Netherlands | 7 |
| # | Industry | |
|---|---|---|
| #1 | Basic materials chemistry | |
| #2 | Thermal processes | |
| #3 | Materials and metallurgy | |
| #4 | Macromolecular chemistry and polymers | |
| #5 | Chemical engineering | |
| #6 | Machines |
| # | Technology | |
|---|---|---|
| #1 | Inorganic treatment materials | |
| #2 | Inorganic compounds | |
| #3 | Chemical or physical processes | |
| #4 | Fluid fuel combustion | |
| #5 | Burners | |
| #6 | Compounding ingredients | |
| #7 | Unspecified technologies |
| # | Name | Total Patents |
|---|---|---|
| #1 | Steele, N.D. | 1 |
| #2 | Vail, R.S.P. | 1 |