| # | Country | Total Patents | |
|---|---|---|---|
| #1 | France | 11 |
| # | Industry | |
|---|---|---|
| #1 | Telecommunications | |
| #2 | Basic communication technologies | |
| #3 | Electrical machinery and energy | |
| #4 | Audio-visual technology | |
| #5 | Digital networks |
| # | Technology | |
|---|---|---|
| #1 | Telephonic communication | |
| #2 | Multiplex communication | |
| #3 | Transmission | |
| #4 | Digital information transmission | |
| #5 | Cables and insulators | |
| #6 | Modulation | |
| #7 | Loudspeakers and microphones | |
| #8 | Pulse technique | |
| #9 | Amplifiers | |
| #10 | Transmission systems |