| # | Country | Total Patents | |
|---|---|---|---|
| #1 | Italy | 5 | |
| #2 | Brazil | 4 | |
| #3 | Spain | 4 | |
| #4 | USSR (Union of Socialist Soviet Republics) | 1 |
| # | Industry | |
|---|---|---|
| #1 | Thermal processes | |
| #2 | Chemical engineering |
| # | Technology | |
|---|---|---|
| #1 | Details of furnaces | |
| #2 | Furnaces | |
| #3 | Drying solid materials by removing liquid |
| # | Name | Total Patents |
|---|---|---|
| #1 | Rolla A | 7 |
| #2 | Aldo Rolla | 1 |
| #3 | Do Rolla | 1 |
| #4 | Rolla Alda | 1 |
| Publication | Filing date | Title |
|---|---|---|
| ES451773A1 | Pre-fabricated concrete element for industrial furnaces |