| # | Country | Total Patents | |
|---|---|---|---|
| #1 | Netherlands | 5 | |
| #2 | Belgium | 1 | |
| #3 | German Democratic Republic | 1 | |
| #4 | Germany | 1 | |
| #5 | EPO (European Patent Office) | 1 | |
| #6 | Finland | 1 | |
| #7 | France | 1 | |
| #8 | Luxembourg | 1 | |
| #9 | United States | 1 |
| # | Industry | |
|---|---|---|
| #1 | Mechanical elements | |
| #2 | Machines | |
| #3 | Civil engineering |
| # | Technology | |
|---|---|---|
| #1 | Pipes | |
| #2 | Installations for obtaining water | |
| #3 | Unspecified technologies |
| # | Name | Total Patents |
|---|---|---|
| #1 | Heister Aloisius Henricus Mari | 2 |
| #2 | Nijsen Andreas J L | 2 |
| #3 | Heister Aloisius H M | 2 |
| #4 | Nijsen Andreas Jacobus Louis | 2 |
| #5 | Pos Gerrit Bertus | 2 |
| #6 | Pol Jan Van De | 1 |
| #7 | Boeff Johannes Gerardus De | 1 |
| #8 | Pos G B | 1 |
| #9 | Ekeris Hendrik Lambertus Van | 1 |
| #10 | Kristen Florentinus Robertus A | 1 |
| Publication | Filing date | Title |
|---|---|---|
| NL1000776C1 | Protection of plastic pipe serving gas meter | |
| NL8902730A | Pipe union with sleeve - has sealing ring core in segments sliding inside each other in peripheral direction | |
| NL8902729A | Tube coupling seal - has rubber seal muff and tension clamp for tubes of different diameters | |
| NL8902306A | Pipe coupling. | |
| DE3220246A1 | Hydrant |