| # | Country | Total Patents | |
|---|---|---|---|
| #1 | Netherlands | 9 | |
| #2 | EPO (European Patent Office) | 6 | |
| #3 | WIPO (World Intellectual Property Organization) | 3 |
| # | Industry | |
|---|---|---|
| #1 | Civil engineering | |
| #2 | Mechanical elements | |
| #3 | Machines | |
| #4 | Chemical engineering | |
| #5 | Environmental technology |
| # | Technology | |
|---|---|---|
| #1 | Pipes | |
| #2 | Sewers | |
| #3 | Shaping of plastics | |
| #4 | General building constructions | |
| #5 | Roof coverings | |
| #6 | Climate change adaptation technologies | |
| #7 | Separation |
| # | Name | Total Patents |
|---|---|---|
| #1 | Zuurmond Johannes | 10 |
| #2 | Baijense Leendert Adrianus | 5 |
| #3 | Posthuma Andrys | 3 |
| #4 | Menzel Henricus Oscar | 3 |
| #5 | Meppelink Gerrit Berend Jan | 3 |
| #6 | Oosterhof Gerard | 3 |
| #7 | Johannes Zuurmond | 2 |
| #8 | De Boer Klaas Alexander | 2 |
| #9 | Hulst Henderikus | 2 |
| #10 | Mollema Ruurd Hette | 2 |
| Publication | Filing date | Title |
|---|---|---|
| NL2021067B1 | Pipe coupling with seal | |
| NL2016600B1 | Structural elements with pipes and an insert coupling. | |
| NL2011340C2 | Drainage arrangement for forming a drainage body. | |
| NL2010112C2 | Connection assembly. | |
| NL1033137C1 | Water drainage system. | |
| NL1031966C2 | Gully, especially street gully, contains infiltration filter with water distributor on its upstream side supplying horizontal flow of water from gully inlet | |
| NL1029202C1 | Pipe for drain or sewer, has prefabricated connection hole in pipe wall formed by attached pipe stump or ring | |
| NL1029091C2 | Inspection pit. |