| # | Country | Total Patents | |
|---|---|---|---|
| #1 | Netherlands | 6 | |
| #2 | EPO (European Patent Office) | 2 | |
| #3 | Germany | 1 | |
| #4 | France | 1 | |
| #5 | United Kingdom | 1 | |
| #6 | United States | 1 |
| # | Industry | |
|---|---|---|
| #1 | Mechanical elements | |
| #2 | Machines | |
| #3 | Transport | |
| #4 | Engines, pumps and turbines | |
| #5 | Environmental technology | |
| #6 | Thermal processes |
| # | Name | Total Patents |
|---|---|---|
| #1 | Cornelis Paul | 2 |
| #2 | Den Ouden Willem Hendrik | 2 |
| #3 | Den Ouden Willem H | 1 |
| #4 | Paul Cornelis | 1 |
| Publication | Filing date | Title |
|---|---|---|
| NL8902185A | Remote control of engine functions. | |
| NL8901998A | Device for driving a vessel. | |
| NL8400741A | IC engine lubricating oil cooler - has spaced tubular jacket with spiral wire in cavity between inner and outer tubes | |
| NL8303950A | Friction coupling. | |
| NL8000534A | Boat laterally steerable by pump with three=way valve - takes in water and propels it at one or other side of hull below water line | |
| NL7709188A | Muffler for the water cooled exhaust of a combustion engine. |