| # | Country | Total Patents | |
|---|---|---|---|
| #1 | Netherlands | 5 | |
| #2 | EPO (European Patent Office) | 3 | |
| #3 | WIPO (World Intellectual Property Organization) | 3 | |
| #4 | Australia | 1 | |
| #5 | Brazil | 1 | |
| #6 | Canada | 1 | |
| #7 | China | 1 | |
| #8 | India | 1 | |
| #9 | Republic of Korea | 1 | |
| #10 | Singapore | 1 |
| # | Industry | |
|---|---|---|
| #1 | Audio-visual technology | |
| #2 | Telecommunications | |
| #3 | Digital networks | |
| #4 | Control |
| # | Technology | |
|---|---|---|
| #1 | Loudspeakers and microphones | |
| #2 | Digital information transmission | |
| #3 | Multiplex communication | |
| #4 | Alarm systems |
| # | Name | Total Patents |
|---|---|---|
| #1 | Jonkman Willemjan Johannes | 16 |
| #2 | Jonkman Willem-Jan Johannes | 1 |
| #3 | Willemjan Johannes Jonkman | 1 |
| Publication | Filing date | Title |
|---|---|---|
| NL2006498C2 | Isolator device for passing through a signal. | |
| NL2006494C2 | Isolator device for passing through a signal. | |
| NL2006469C2 | Isolator device for passing through a signal. | |
| NL2006468C2 | Isolator device for passing through a signal. | |
| NL2006386C2 | Device for testing the integrity of a signalling line. |