| # | Country | Total Patents | |
|---|---|---|---|
| #1 | Brazil | 7 | |
| #2 | China | 3 | |
| #3 | United States | 2 | |
| #4 | Hong Kong | 1 | |
| #5 | Indonesia | 1 | |
| #6 | Taiwan | 1 | |
| #7 | Yugoslavia (Serbia and Montenegro) | 1 |
| # | Industry | |
|---|---|---|
| #1 | Telecommunications | |
| #2 | Digital networks | |
| #3 | Audio-visual technology | |
| #4 | Basic communication technologies | |
| #5 | Measurement | |
| #6 | Environmental technology | |
| #7 | Machines |
| # | Name | Total Patents |
|---|---|---|
| #1 | Sandevi Tommy | 1 |
| #2 | Rahman Akbar | 1 |
| #3 | Friman Daniel | 1 |
| #4 | Jonsson Bjoern | 1 |
| #5 | Kalogeropoulos S | 1 |
| #6 | Willars Per Hans Ke | 1 |
| #7 | Stahl Wolfgang | 1 |
| #8 | Mattisson Seven | 1 |
| #9 | Andre T | 1 |
| #10 | Toernqvist Krister | 1 |
| Publication | Filing date | Title |
|---|---|---|
| US6208959B1 | Mapping of digital data symbols onto one or more formant frequencies for transmission over a coded voice channel | |
| CN1207833A | Method and arrangement for making fixed length codes |