Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 10564334 | Spectral filter and spectrometric device | Munenori KAWAJI, Ryoji Matsuda | 2020-02-18 |
| 10274657 | Optical filter and imaging device | Koji Nakamura, Munenori KAWAJI | 2019-04-30 |
| 8441908 | Optical pickup device | Iwao Usui | 2013-05-14 |
| 7652823 | Non-polarizing beam splitter | Iwao Usui, Toshiya Kawanishi | 2010-01-26 |