| # | Country | Total Patents | |
|---|---|---|---|
| #1 | Switzerland | 7 | |
| #2 | Austria | 6 | |
| #3 | Denmark | 3 | |
| #4 | Spain | 3 | |
| #5 | United Kingdom | 2 |
| # | Industry | |
|---|---|---|
| #1 | Engines, pumps and turbines | |
| #2 | Environmental technology |
| # | Technology | |
|---|---|---|
| #1 | Internal-combustion piston engines | |
| #2 | Climate change mitigation in transportation |
| # | Name | Total Patents |
|---|---|---|
| #1 | Leidenroth Gustav | 13 |
| #2 | Gustav Leidenroth | 5 |
| Publication | Filing date | Title |
|---|---|---|
| GB191506849A | Improvements in Two Stroke Cycle Internal Combustion Engines. | |
| GB191503996A | Improvements in Two Stroke Cycle Internal Combustion Engines. |