Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7654416 | Fluid and hair-dye dispensers | Wilhelmus van Westerop, Leen Hellenberg, Johannes Hendrikus Mink | 2010-02-02 |
| 7597217 | Two disc valve pump assembly for a fluid dispenser | Johannes Hendrikus Mink, Wilhelmus van Westerop, Renautus Petrus Cornelis Neeuwisse, Leen Hellenberg, Adriaan Kuipers | 2009-10-06 |
| 7185789 | Hair dye dispenser | Johannes Hendrikus Mink, Wilhelmus van Westerop, Renautus Meeuwisse, Leen Hellenberg, Adriaan Kuipers | 2007-03-06 |