| # | Country | Total Patents | |
|---|---|---|---|
| #1 | Australia | 3 | |
| #2 | United States | 3 | |
| #3 | WIPO (World Intellectual Property Organization) | 2 | |
| #4 | South Africa | 2 | |
| #5 | Brazil | 1 | |
| #6 | Canada | 1 | |
| #7 | China | 1 | |
| #8 | EPO (European Patent Office) | 1 |
| # | Industry | |
|---|---|---|
| #1 | Digital networks | |
| #2 | Telecommunications |
| # | Technology | |
|---|---|---|
| #1 | Digital information transmission | |
| #2 | Transmission |
| # | Name | Total Patents |
|---|---|---|
| #1 | Chaffee Donald L | 10 |
| #2 | Dobson W Kurt | 7 |
| #3 | Mallory Mark P | 6 |
| #4 | W Kurt Dobson | 2 |
| #5 | Brand Graham | 2 |
| #6 | Donald L Chaffee | 2 |
| #7 | Brand Graham H | 1 |
| #8 | Dobson Kurt W | 1 |
| #9 | Chaffe Donald L | 1 |
| Publication | Filing date | Title |
|---|---|---|
| US5117418A | Frequency domain adaptive echo canceller for full-duplex data transmission | |
| US5128964A | Modulation method and apparatus for multicarrier data transmission | |
| US4943980A | Multi-carrier high speed modem |