| # | Country | Total Patents | |
|---|---|---|---|
| #1 | Brazil | 3 | |
| #2 | United Kingdom | 3 | |
| #3 | Netherlands | 3 | |
| #4 | Canada | 2 | |
| #5 | Germany | 2 | |
| #6 | France | 2 | |
| #7 | Norway | 2 | |
| #8 | Sweden | 2 | |
| #9 | Australia | 1 | |
| #10 | Denmark | 1 | |
| #11 | Finland | 1 | |
| #12 | Italy | 1 | |
| #13 | Japan | 1 | |
| #14 | Republic of Korea | 1 | |
| #15 | South Africa | 1 |
| # | Industry | |
|---|---|---|
| #1 | Transport |
| # | Technology | |
|---|---|---|
| #1 | Ships |
| # | Name | Total Patents |
|---|---|---|
| #1 | Haak Rob Van Den | 6 |
| #2 | Van Den Haak R | 3 |
| #3 | Van Den Haak Rob | 2 |
| #4 | Haak R | 2 |
| #5 | Haak Rob Van Der | 1 |
| #6 | Haak R V D | 1 |
| #7 | Haak Rob Van De | 1 |
| #8 | Rob Van Den Haak | 1 |
| #9 | Robu Ban Den Haaku | 1 |
| Publication | Filing date | Title |
|---|---|---|
| KR840000675B1 | Anchor | |
| CA1094399A | Anchor | |
| NL7807093A | Anchor with double-plate fluke structures - has shank hinged to fluke centre of gravity and fluke angle delimiters on either side of hinge | |
| NL7608728A | Anchor. | |
| GB1496510A | Anchor |