| # | Country | Total Patents | |
|---|---|---|---|
| #1 | United States | 4 | |
| #2 | WIPO (World Intellectual Property Organization) | 4 | |
| #3 | Germany | 3 | |
| #4 | EPO (European Patent Office) | 3 | |
| #5 | Australia | 1 |
| # | Industry | |
|---|---|---|
| #1 | Computer technology | |
| #2 | Digital networks | |
| #3 | Audio-visual technology | |
| #4 | IT methods for management | |
| #5 | Control |
| # | Technology | |
|---|---|---|
| #1 | Electric digital data processing | |
| #2 | Digital information transmission | |
| #3 | Data processing systems | |
| #4 | Special information storage | |
| #5 | Television | |
| #6 | Coin-freed |
| # | Name | Total Patents |
|---|---|---|
| #1 | Wittkoetter Erland | 8 |
| #2 | Wittkotter Erland | 4 |
| #3 | Gomez Tomy M | 2 |
| #4 | Wittkoetter Erland Dr | 1 |
| Publication | Filing date | Title |
|---|---|---|
| US2006190290A1 | Systems and methods for distributing electronic files | |
| WO2004015952A2 | Device for carrying out the copy-protected distribution of electronic documents | |
| WO03013167A1 | Device for digitally signing an electronic document | |
| DE10140237A1 | Copy protection device |