| # | Country | Total Patents | |
|---|---|---|---|
| #1 | EPO (European Patent Office) | 5 | |
| #2 | United States | 4 | |
| #3 | China | 3 | |
| #4 | Australia | 1 | |
| #5 | Republic of Korea | 1 | |
| #6 | WIPO (World Intellectual Property Organization) | 1 |
| # | Industry | |
|---|---|---|
| #1 | Digital networks | |
| #2 | Telecommunications | |
| #3 | Computer technology | |
| #4 | Basic communication technologies |
| # | Technology | |
|---|---|---|
| #1 | Digital information transmission | |
| #2 | Telephonic communication | |
| #3 | Transmission | |
| #4 | Speech analysis | |
| #5 | Wireless communication networks | |
| #6 | Amplification control |
| # | Name | Total Patents |
|---|---|---|
| #1 | Futagi Sadaki | 4 |
| #2 | Uesugi Mitsuru | 4 |
| #3 | Suzuki Hiroshi | 4 |
| #4 | Yoshino Hitoshi | 3 |
| #5 | Anzai Jun | 2 |
| #6 | Yoshida Koji | 2 |
| #7 | Itakura Fumitada | 2 |
| #8 | Tsubaki Kazuhisa | 2 |
| #9 | Nakagomi Hisashi | 2 |
| #10 | Itakura Hitoshi | 2 |
| Publication | Filing date | Title |
|---|---|---|
| US6813357B1 | Exclusive key sharing method | |
| US6289064B1 | Synchronization equipment |