| # | Country | Total Patents | |
|---|---|---|---|
| #1 | United States | 12 |
| # | Industry | |
|---|---|---|
| #1 | Audio-visual technology | |
| #2 | Basic communication technologies | |
| #3 | Semiconductors | |
| #4 | Optics |
| # | Technology | |
|---|---|---|
| #1 | Special information storage | |
| #2 | Pulse technique | |
| #3 | Television | |
| #4 | Optical systems | |
| #5 | Semiconductor devices |
| # | Name | Total Patents |
|---|---|---|
| #1 | Nakahara Hironori | 12 |
| #2 | Takeshita Nobuo | 8 |
| #3 | Ogawa Masaharu | 4 |
| #4 | Matozaki Toshiya | 3 |
| #5 | Horiuchi Sachito | 1 |
| Publication | Filing date | Title |
|---|---|---|
| US2014313874A1 | Optical head device and optical disc device | |
| US2007274183A1 | Optical disc and optical disc device | |
| US2007253301A1 | Optical disc and optical disc device | |
| US2007253302A1 | Optical disc and optical disc device |