Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 12203786 | Encoder | Masaru Shiraishi, Shuichi Nagai | 2025-01-21 |
| 11982550 | Encoder | Shuichi Nagai, Masaru Shiraishi, Toshihiro Koga, Takuma Katayama | 2024-05-14 |
| 7755985 | Optical pickup device and optical disk drive | Hiroshi Yamamoto, Yutaka Murakami, Kenichi Nakano | 2010-07-13 |
| 7199949 | Optical pickup device and optical disk device | Takashi Haruguchi, Fuminobu Furukawa | 2007-04-03 |
| 6341104 | Optical pickup apparatus of tilt control type | Hideo Yamaguchi, Tadashi Maki | 2002-01-22 |