Patents per Year
Issued Patents All Time
Showing 1–5 of 5 patents
| Patent # | Title | Co-Inventors | Date | Approx Value ⓘ |
|---|---|---|---|---|
| 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 | $105,000 |
| 7199949 | Optical pickup device and optical disk device | Takashi Haruguchi, Fuminobu Furukawa | 2007-04-03 | $315,000 |
| 6341104 | Optical pickup apparatus of tilt control type | Hideo Yamaguchi, Tadashi Maki | 2002-01-22 | $250,000 |