| # | Country | Total Patents | |
|---|---|---|---|
| #1 | EPO (European Patent Office) | 14 | |
| #2 | WIPO (World Intellectual Property Organization) | 13 | |
| #3 | China | 11 | |
| #4 | Taiwan | 11 | |
| #5 | United States | 11 | |
| #6 | Republic of Korea | 7 | |
| #7 | Hong Kong | 2 |
| # | Industry | |
|---|---|---|
| #1 | Electrical machinery and energy | |
| #2 | Telecommunications | |
| #3 | Semiconductors | |
| #4 | Audio-visual technology | |
| #5 | Control | |
| #6 | Environmental technology |
| # | Name | Total Patents |
|---|---|---|
| #1 | Nakagawa Masao | 58 |
| #2 | Haruyama Shinichiro | 41 |
| #3 | Komine Toshihiko | 22 |
| #4 | Koike Yasuhiro | 19 |
| #5 | Ishigure Takaaki | 17 |
| #6 | Sugawara Yasuo | 17 |
| #7 | Kitano Shogo | 13 |
| #8 | Arita Takemi | 12 |
| #9 | Masao Nakagawa | 8 |
| #10 | Yamaguchi Takehiko | 7 |
| Publication | Filing date | Title |
|---|---|---|
| CN1943147A | Communications system and leakage optical fiber | |
| EP1858179A1 | Illumination light communication device |