| # | Country | Total Patents | |
|---|---|---|---|
| #1 | United States | 12 | |
| #2 | China | 3 | |
| #3 | Taiwan | 2 | |
| #4 | EPO (European Patent Office) | 1 | |
| #5 | Republic of Korea | 1 | |
| #6 | WIPO (World Intellectual Property Organization) | 1 |
| # | Industry | |
|---|---|---|
| #1 | Optics | |
| #2 | Audio-visual technology |
| # | Technology | |
|---|---|---|
| #1 | Optical systems | |
| #2 | Cameras | |
| #3 | Television |
| # | Name | Total Patents |
|---|---|---|
| #1 | Sekine Kumajiro | 14 |
| #2 | Kobayashi Takeshi | 10 |
| #3 | Yokota Akihiro | 4 |
| #4 | Sekine Yasuhiro | 3 |
| #5 | Matsumoto Susumu | 3 |
| #6 | Takeshi Kobayashi | 3 |
| #7 | Kumajiro Sekine | 3 |
| #8 | Ootaka Yasaburou | 2 |
| #9 | Hayashi Hidetoshi | 2 |
| #10 | Nakada Takeki | 2 |
| Publication | Filing date | Title |
|---|---|---|
| WO2004059361A1 | Taking lens | |
| KR20000011453A | Projection Lens Apparatus | |
| US5371628A | Projection lens incorporating a pair of matching plastic lenses |