| # | Country | Total Patents | |
|---|---|---|---|
| #1 | WIPO (World Intellectual Property Organization) | 4 | |
| #2 | United States | 3 | |
| #3 | China | 2 | |
| #4 | EPO (European Patent Office) | 2 | |
| #5 | Japan | 2 | |
| #6 | Republic of Korea | 2 | |
| #7 | Taiwan | 2 | |
| #8 | Australia | 1 | |
| #9 | Israel | 1 |
| # | Industry | |
|---|---|---|
| #1 | Telecommunications | |
| #2 | Audio-visual technology | |
| #3 | Computer technology |
| # | Technology | |
|---|---|---|
| #1 | Telephonic communication | |
| #2 | Transmission | |
| #3 | Loudspeakers and microphones | |
| #4 | Speech analysis |
| # | Name | Total Patents |
|---|---|---|
| #1 | Masuda Masahisa | 16 |
| #2 | Kume Yasuhiro | 7 |
| #3 | White Donald R | 3 |
| #4 | Kitazumi Gontaro | 3 |
| #5 | While Donald R | 2 |
| #6 | Hatori Terry | 1 |
| #7 | Yasuhiro Masuda Masahisa Kume | 1 |
| #8 | Kitakado Kentaro | 1 |
| Publication | Filing date | Title |
|---|---|---|
| JP2009232436A | Single transducer full duplex talking circuit and audio circuit | |
| WO2005048572A2 | Two-way communications device having a single transducer | |
| US2008274764A1 | Automatic-switching wireless communication device | |
| US7072476B2 | Audio headset | |
| WO03039191A1 | Hands-free microphone and speaker phone accessory | |
| TW524025B | Loopdown and loop around headsets | |
| EP1371261A2 | Audio headset | |
| TW524024B | Full duplex headset with separate function transducers for noisy environments |