| # | Country | Total Patents | |
|---|---|---|---|
| #1 | Netherlands | 3 | |
| #2 | Brazil | 2 | |
| #3 | China | 2 | |
| #4 | EPO (European Patent Office) | 2 | |
| #5 | Hong Kong | 2 | |
| #6 | Hungary | 2 | |
| #7 | WIPO (World Intellectual Property Organization) | 2 | |
| #8 | Australia | 1 | |
| #9 | Canada | 1 | |
| #10 | New Zealand | 1 | |
| #11 | South Africa | 1 |
| # | Industry | |
|---|---|---|
| #1 | Mechanical elements | |
| #2 | Measurement | |
| #3 | Engines, pumps and turbines |
| # | Technology | |
|---|---|---|
| #1 | Lubricating | |
| #2 | Measuring volume | |
| #3 | Lubricating of machines | |
| #4 | Pumps |
| # | Name | Total Patents |
|---|---|---|
| #1 | Van Der Hulst Willem | 12 |
| #2 | Willem Van Der Hulst | 4 |
| #3 | Hulst Willem | 2 |
| #4 | Der Hulst Willem Van | 1 |
| Publication | Filing date | Title |
|---|---|---|
| NL2013166B1 | Pump element, pump and lubrication system. | |
| NL2008659C2 | Device for dispensing charges of a fluid. | |
| NL2007335C2 | Oil management system for an internal combustion engine, and a method for oil management of such an engine. |