| # | Country | Total Patents | |
|---|---|---|---|
| #1 | Netherlands | 3 | |
| #2 | China | 2 | |
| #3 | EPO (European Patent Office) | 2 | |
| #4 | United States | 2 | |
| #5 | WIPO (World Intellectual Property Organization) | 2 | |
| #6 | India | 1 | |
| #7 | Republic of Korea | 1 | |
| #8 | South Africa | 1 |
| # | Industry | |
|---|---|---|
| #1 | Consumer goods | |
| #2 | Machines | |
| #3 | Machine tools | |
| #4 | Textiles and paper |
| # | Technology | |
|---|---|---|
| #1 | Permanently attaching objects | |
| #2 | Filing and indexing | |
| #3 | Unspecified technologies | |
| #4 | Books | |
| #5 | Mechanical paper working | |
| #6 | Cutting | |
| #7 | Perforating |
| # | Name | Total Patents |
|---|---|---|
| #1 | Gokkel Paul | 13 |
| #2 | Paul Gokkel | 1 |
| Publication | Filing date | Title |
|---|---|---|
| EP2807037A1 | Cover, coupling element and folder | |
| NL2009497A | Cover, coupling element and folder. | |
| NL2008540C2 | Cover, coupling element and folder. | |
| NL2008113C2 | Punch device, punch composition, punch knife, sheet of paper and method of manufacturing them. |