Issued Patents All Time
Showing 1–5 of 5 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5320734 | Test apparatus for measuring concentration of test substance in liquid | Koichi Yamasaki, Tatsuhiko Osaka, Hitonaga Nakano, Yasuhiro Nagata, Sadaaki Nakaoka +2 more | 1994-06-14 |
| 5228972 | Apparatus for measuring concentration of test substance in liquid | Tatsuhiko Osaka, Koichi Yamasaki, Hiroshi Terawaki, Sadaaki Nakaoka, Harumi Tanaka +1 more | 1993-07-20 |
| 4933066 | Apparatus for mounting a diffusion-limiting membrane for a sensor | Tatsuhiko Osaka, Hiroshi Terawaki, Koichi Yamasaki | 1990-06-12 |
| 4578693 | Semiconductive photodetector device | Yoshiaki Yazawa, Nobuaki Miyakawa, Takahide Ikeda, Tatsuya Kamei | 1986-03-25 |
| 4242695 | Low dark current photo-semiconductor device | Hirobumi Ouchi | 1980-12-30 |