| # | Country | Total Patents | |
|---|---|---|---|
| #1 | EPO (European Patent Office) | 4 | |
| #2 | WIPO (World Intellectual Property Organization) | 4 | |
| #3 | China | 3 | |
| #4 | Taiwan | 3 | |
| #5 | Australia | 2 | |
| #6 | United States | 2 | |
| #7 | Hong Kong | 1 |
| # | Industry | |
|---|---|---|
| #1 | Telecommunications | |
| #2 | Digital networks | |
| #3 | Audio-visual technology |
| # | Technology | |
|---|---|---|
| #1 | Digital information transmission | |
| #2 | Telephonic communication | |
| #3 | Selecting | |
| #4 | Broadcast communication | |
| #5 | Television |
| # | Name | Total Patents |
|---|---|---|
| #1 | Sawada Akemi | 16 |
| #2 | Akemi Sawada | 3 |
| Publication | Filing date | Title |
|---|---|---|
| TW494661B | Communication device | |
| TW486900B | Transmitting device using cable TV network | |
| CN1241331A | Communication device for providing information utilizing subscriber line | |
| EP0939522A1 | Method of communicating with subscriber devices through a global communication network |