| # | Country | Total Patents | |
|---|---|---|---|
| #1 | WIPO (World Intellectual Property Organization) | 6 | |
| #2 | EPO (European Patent Office) | 4 | |
| #3 | Netherlands | 4 | |
| #4 | United States | 4 | |
| #5 | China | 3 | |
| #6 | Philippines | 2 | |
| #7 | Singapore | 2 | |
| #8 | Canada | 1 | |
| #9 | Hungary | 1 |
| # | Industry | |
|---|---|---|
| #1 | Electrical machinery and energy | |
| #2 | Environmental technology | |
| #3 | Semiconductors |
| # | Name | Total Patents |
|---|---|---|
| #1 | Rooymans Johannes Otto | 15 |
| #2 | Rooijmans Johannes Otto | 10 |
| #3 | Johannes Otto Rooymans | 1 |
| #4 | Otto Rooijmans Johannes | 1 |
| Publication | Filing date | Title |
|---|---|---|
| WO2020221448A1 | Backlighting device for the display screen of a television or mobile phone | |
| NL2013929B1 | Power optimization for battery powered street lighting system. | |
| NL2012037C2 | Materials and process for spatial s/p ratio distribution. | |
| NL2012028C2 | Spectral equalizer. | |
| NL2011375C2 | Spectrally enhanced white light for better visual acuity. |