| # | Country | Total Patents | |
|---|---|---|---|
| #1 | United States | 4 | |
| #2 | Australia | 1 | |
| #3 | Brazil | 1 | |
| #4 | Canada | 1 | |
| #5 | China | 1 | |
| #6 | Egypt | 1 | |
| #7 | EPO (European Patent Office) | 1 | |
| #8 | United Kingdom | 1 | |
| #9 | Israel | 1 | |
| #10 | Republic of Korea | 1 |
| # | Industry | |
|---|---|---|
| #1 | Audio-visual technology |
| # | Technology | |
|---|---|---|
| #1 | Television |
| # | Name | Total Patents |
|---|---|---|
| #1 | Rist Bruno A | 12 |
| #2 | Devries Adrian J | 9 |
| #3 | Devries Adrian J Dr | 1 |
| #4 | Devries Adrian A | 1 |
| Publication | Filing date | Title |
|---|---|---|
| US5235640A | Master decoder for television signal scramble systems | |
| EG18932A | Restricted access television transmission system. | |
| BR8900179A | Television signal transmission security system and process for obtaining television transmission security | |
| IL88277D0 | Restricted access television transmission system | |
| US4825467A | Restricted access television transmission system |