| # | Country | Total Patents | |
|---|---|---|---|
| #1 | Norway | 3 | |
| #2 | China | 2 | |
| #3 | Russian Federation | 2 | |
| #4 | United States | 2 | |
| #5 | WIPO (World Intellectual Property Organization) | 2 | |
| #6 | Australia | 1 | |
| #7 | Brazil | 1 | |
| #8 | Canada | 1 | |
| #9 | Czechia | 1 | |
| #10 | German Democratic Republic | 1 | |
| #11 | EPO (European Patent Office) | 1 | |
| #12 | Finland | 1 | |
| #13 | Hungary | 1 | |
| #14 | Ireland | 1 | |
| #15 | India | 1 | |
| #16 | Japan | 1 | |
| #17 | Republic of Korea | 1 | |
| #18 | Mexico | 1 | |
| #19 | Portugal | 1 |
| # | Industry | |
|---|---|---|
| #1 | Engines, pumps and turbines |
| # | Technology | |
|---|---|---|
| #1 | Rotary pistons | |
| #2 | Internal-combustion piston engines | |
| #3 | Hot gas positive-displacement engine plants |
| # | Name | Total Patents |
|---|---|---|
| #1 | Larsen Thor | 20 |
| #2 | Thor Larsen | 2 |
| #3 | Nils Langellesvej | 1 |
| Publication | Filing date | Title |
|---|---|---|
| WO0009860A1 | Driving system for machinery, such as a motor, compressor etc. | |
| DD299080A5 | Power conversion machine with piston rotating in a ball housing | |
| HUT62068A | Energy-transforming machine | |
| US4938025A | Power conversion machine having pistons which are moved in a turning movement in a spherical housing |