| # | Country | Total Patents | |
|---|---|---|---|
| #1 | EPO (European Patent Office) | 6 | |
| #2 | WIPO (World Intellectual Property Organization) | 3 | |
| #3 | Canada | 2 | |
| #4 | Norway | 2 | |
| #5 | Australia | 1 | |
| #6 | Germany | 1 | |
| #7 | Denmark | 1 | |
| #8 | EAPO (Eurasian Patent Organization) | 1 | |
| #9 | United States | 1 |
| # | Industry | |
|---|---|---|
| #1 | Civil engineering | |
| #2 | Engines, pumps and turbines | |
| #3 | Environmental technology | |
| #4 | Machines |
| # | Technology | |
|---|---|---|
| #1 | Earth drilling | |
| #2 | Rotary-pistons | |
| #3 | Safety devices | |
| #4 | Unspecified technologies | |
| #5 | Reduction of greenhouse gas emissions | |
| #6 | Machines for liquids |
| # | Name | Total Patents |
|---|---|---|
| #1 | Grupping Arnold Willem Josephu | 16 |
| #2 | Grupping Arnold W | 1 |
| Publication | Filing date | Title |
|---|---|---|
| WO9920904A1 | Downhole roller vane motor and roller vane pump | |
| WO9416198A1 | Downhole roller vane motor and roller vane pump | |
| US4502539A | Method for the underground gasification of coal or browncoal |