| # | Country | Total Patents | |
|---|---|---|---|
| #1 | Netherlands | 7 | |
| #2 | EPO (European Patent Office) | 6 | |
| #3 | WIPO (World Intellectual Property Organization) | 5 | |
| #4 | Australia | 4 | |
| #5 | United States | 4 | |
| #6 | Canada | 2 | |
| #7 | Belgium | 1 |
| # | Industry | |
|---|---|---|
| #1 | Chemical engineering | |
| #2 | Machines | |
| #3 | Mechanical elements |
| # | Technology | |
|---|---|---|
| #1 | Separation | |
| #2 | Unspecified technologies | |
| #3 | Pistons and sealings |
| # | Name | Total Patents |
|---|---|---|
| #1 | Bartels Antonius Josephus | 12 |
| #2 | Vleemingh Geurt Jan Hendrik | 8 |
| #3 | Eichelsheim Alexander Victor | 7 |
| #4 | Niers Louis Antonius Hubertus | 6 |
| #5 | Staff Paul Ernest | 3 |
| #6 | Engelander Pieter | 3 |
| #7 | Engelander Pino | 1 |
| #8 | De Gelder Mark | 1 |
| #9 | Eichelsheim Alexander V | 1 |
| #10 | Bartels Antonius J | 1 |
| Publication | Filing date | Title |
|---|---|---|
| NL1010941C2 | Filter, in particular liquid filter, provided with a filter element with identification label. | |
| NL1007358C2 | Fluid filter, in particular for hydraulic drive systems. | |
| NL1003417C2 | Filter, especially liquid filter. | |
| NL1001867C2 | Filter element for liquid filters | |
| NL1001729C2 | Sealing of a cylindrical filter element in a chamber in a machine housing. | |
| NL1000020C2 | Liquid filter. | |
| BE1004811A5 | Reservoir-return filter. | |
| NL8702806A | Filter device and filter cartridge therefor. |