| # | Country | Total Patents | |
|---|---|---|---|
| #1 | Australia | 5 | |
| #2 | Bulgaria | 1 | |
| #3 | Canada | 1 | |
| #4 | Czechia | 1 | |
| #5 | EPO (European Patent Office) | 1 | |
| #6 | Hungary | 1 | |
| #7 | Mexico | 1 | |
| #8 | New Zealand | 1 | |
| #9 | Poland | 1 | |
| #10 | Slovakia | 1 | |
| #11 | United States | 1 | |
| #12 | WIPO (World Intellectual Property Organization) | 1 | |
| #13 | South Africa | 1 |
| # | Industry | |
|---|---|---|
| #1 | Engines, pumps and turbines | |
| #2 | Environmental technology |
| # | Technology | |
|---|---|---|
| #1 | Rotary pistons | |
| #2 | Internal-combustion piston engines | |
| #3 | Climate change mitigation in transportation |
| # | Name | Total Patents |
|---|---|---|
| #1 | Richards Ronald Leslie | 12 |
| #2 | Richards Ronald L | 2 |
| #3 | Richards Ron | 1 |
| Publication | Filing date | Title |
|---|---|---|
| US2002114718A1 | Rotary internal combustion engines | |
| AU2244900A | Rotary internal combustion engines | |
| NZ316854A | Rotary internal combustion engine with part toroidal working chambers | |
| CA2235271A1 | Rotary internal combustion engines | |
| AU668497B3 | Rotary internal combustion engines | |
| AUPN550595A0 | Rotary positive displacement apparatus | |
| AUPN550495A0 | Rotary internal combustion engines |