Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 12313868 | Optical filter | Hideaki Takahoshi, Kazuya Takemoto, Keisuke Kawai | 2025-05-27 |
| 5621832 | Beam splitter and optical coupler using the same | Jun Yokoyama | 1997-04-15 |
| 4938859 | Ion bombardment device with high frequency | Yoshio Ide, Masahiro Mori, Ryo Yoshida, Tsukasa Sawaki, Kazuo Hara | 1990-07-03 |
| 4548628 | Filter medium and process for preparing same | Kunihiko Fukumori | 1985-10-22 |