Issued Patents All Time
Showing 1–5 of 5 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5982093 | Photocathode and electron tube having enhanced absorption edge characteristics | Tokuaki Nihashi, Toru Hirohata, Hideki Suzuki | 1999-11-09 |
| 5747826 | Photoemitter electron tube, and photodetector | Minoru Niigaki, Toru Hirohata, Masami Yamada | 1998-05-05 |
| 5591986 | Photoemitter electron tube and photodetector | Minoru Niigaki, Toru Hirohata, Masami Yamada | 1997-01-07 |
| 5471051 | Photocathode capable of detecting position of incident light in one or two dimensions, phototube, and photodetecting apparatus containing same | Minoru Niigaki, Katsuyuki Kinoshita, Toru Hirohata, Masami Yamada, Norio Asakura +2 more | 1995-11-28 |
| 5336902 | Semiconductor photo-electron-emitting device | Minoru Nigaki, Toru Hirohata, Tomoko Suzuki, Kimitsugu Nakamura, Norio Asakura +4 more | 1994-08-09 |