| # | Country | Total Patents | |
|---|---|---|---|
| #1 | Switzerland | 3 | |
| #2 | Spain | 3 | |
| #3 | United Kingdom | 3 | |
| #4 | United States | 3 | |
| #5 | Austria | 2 | |
| #6 | Canada | 2 | |
| #7 | Denmark | 2 |
| # | Industry | |
|---|---|---|
| #1 | Engines, pumps and turbines | |
| #2 | Environmental technology |
| # | Technology | |
|---|---|---|
| #1 | Rotary-pistons | |
| #2 | Machines | |
| #3 | Climate change mitigation in transportation | |
| #4 | Internal-combustion piston engines |
| # | Name | Total Patents |
|---|---|---|
| #1 | Madero Eduardo Jose Maria | 12 |
| #2 | Jose Maria Madero Eduardo | 3 |
| Publication | Filing date | Title |
|---|---|---|
| GB123776A | An Improved Rotary Engine. | |
| US1266605A | Rotary engine. | |
| CA150022A | Rotary engine | |
| US1048844A | Rotary engine. | |
| GB191210702A | Novel Rotary Engine. | |
| US1028371A | Rotary engine. | |
| CA131249A | Rotary engine | |
| GB191101255A | Improvements in or relating to Rotary Engines. |