Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 12061348 | Diffusion plate and optical device | Kazuyuki Shibuya, Naoki Hanashima, Yusuke Matsuno | 2024-08-13 |
| 10042176 | Polarization conversion element, polarization-conversion-element manufacturing method, light-source unit, and optical device | Koji Sasaki, Masatoshi Sasaki, Nobuyuki Koike, Akio Takada, Toshiaki Sugawara +2 more | 2018-08-07 |
| 7636293 | Optical pickup device, recorder and/or reproducer | Noriaki Nishi, Kenji Yamamoto, Takashi Kobayashi, Yuhei Kobayashi | 2009-12-22 |