| # | Country | Total Patents | |
|---|---|---|---|
| #1 | Netherlands | 3 | |
| #2 | Argentina | 1 | |
| #3 | Australia | 1 | |
| #4 | Belgium | 1 | |
| #5 | Canada | 1 | |
| #6 | Germany | 1 | |
| #7 | EPO (European Patent Office) | 1 | |
| #8 | Italy | 1 | |
| #9 | Japan | 1 | |
| #10 | Norway | 1 | |
| #11 | Sweden | 1 | |
| #12 | United States | 1 | |
| #13 | WIPO (World Intellectual Property Organization) | 1 |
| # | Industry | |
|---|---|---|
| #1 | Engines, pumps and turbines |
| # | Technology | |
|---|---|---|
| #1 | Machines | |
| #2 | Internal-combustion piston engines | |
| #3 | Pumps | |
| #4 | Rotary pistons |
| # | Name | Total Patents |
|---|---|---|
| #1 | Loo Pieter Johan Van | 5 |
| #2 | Van Loo Pieter J | 2 |
| #3 | Piitaa Yohan Fuan Ruu | 1 |
| #4 | Van Loo Pieter Johan | 1 |
| Publication | Filing date | Title |
|---|---|---|
| NL1003463C1 | Machine, such as an internal combustion engine, pump or compressor. | |
| NL8301727A | Rotary compressor for gases and liquids - has stationary inner and outer cylinders and eccentric rotor with sealing blocks | |
| DE2805948A1 | ROTATING PISTON MACHINE |