| # | Country | Total Patents | |
|---|---|---|---|
| #1 | Canada | 3 | |
| #2 | EPO (European Patent Office) | 3 | |
| #3 | United States | 3 | |
| #4 | WIPO (World Intellectual Property Organization) | 2 | |
| #5 | Australia | 1 |
| # | Industry | |
|---|---|---|
| #1 | Telecommunications | |
| #2 | Audio-visual technology | |
| #3 | Control | |
| #4 | Digital networks |
| # | Technology | |
|---|---|---|
| #1 | Multiplex communication | |
| #2 | Transmission | |
| #3 | Teaching materials | |
| #4 | Broadcast communication | |
| #5 | Television | |
| #6 | Digital information transmission |
| # | Name | Total Patents |
|---|---|---|
| #1 | Hills Michael T | 12 |
| #2 | Heinrich Raymond L | 3 |
| #3 | Taub Jack R | 2 |
| #4 | Taub Jack Ronald | 2 |
| Publication | Filing date | Title |
|---|---|---|
| CA1261070A | Multiframe matrix data transmission and apparatus | |
| CA1262262A | Education utility | |
| EP0226646A1 | Digital partial response filter | |
| CA1254956A | Digital partial response filter | |
| US4646290A | Data transmission method and apparatus | |
| WO8501854A1 | Education utility | |
| US4558454A | Digital partial response filter |