Issued Patents All Time
Showing 26–42 of 42 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6002141 | Method of using photocathode and method of using electron tube | Minoru Niigaki, Masami Yamada, Katsuyuki Kinoshita | 1999-12-14 |
| 5986387 | Transmission type electron multiplier and electron tube provided | Minoru Niigaki, Hirofumi Kan, Masami Yamada | 1999-11-16 |
| 5982094 | Electron tube with polycrystalline diamond photocathode | Minoru Niigaki, Hirofumi Kan, Masami Yamada | 1999-11-09 |
| 5982093 | Photocathode and electron tube having enhanced absorption edge characteristics | Tokuaki Nihashi, Hideki Suzuki, Tuneo Ihara | 1999-11-09 |
| 5959400 | Electron tube having a diamond field emitter | Minoru Niigaki, Hirofumi Kan, Masami Yamada | 1999-09-28 |
| 5747826 | Photoemitter electron tube, and photodetector | Minoru Niigaki, Tuneo Ihara, Masami Yamada | 1998-05-05 |
| 5710435 | Photomultiplier having a photocathode comprised of semiconductor material | Minoru Niigaki, Tomoko Suzuki, Masami Yamada | 1998-01-20 |
| 5680007 | Photomultiplier having a photocathode comprised of a compound semiconductor material | Minoru Niigaki, Tomoko Suzuki, Masami Yamada | 1997-10-21 |
| 5591986 | Photoemitter electron tube and photodetector | Minoru Niigaki, Tuneo Ihara, 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, Tuneo Ihara, Masami Yamada, Norio Asakura +2 more | 1995-11-28 |
| 5336902 | Semiconductor photo-electron-emitting device | Minoru Nigaki, Tuneo Ihara, Tomoko Suzuki, Kimitsugu Nakamura, Norio Asakura +4 more | 1994-08-09 |
| 5138191 | Photoemitter | Yoshihiko Mizushima, Tsuneo Ihara, Minoru Niigaki, Kenichi Sugimoto, Koichiro Oba +2 more | 1992-08-11 |
| 5109358 | Optical flip-flop circuit | Yoshihiko Mizushima, Kazutoshi Nakajima, Takashi Iida, Yoshihisa Warashina, Kenichi Sugimoto +1 more | 1992-04-28 |
| 5068815 | Optical full adder | Yoshihiko Mizushima, Kazutoshi Nakajima, Takashi Iida, Yoshihisa Warashina, Kenichi Sugimoto +2 more | 1991-11-26 |
| 5051573 | Optical logic operation system | Yoshihiko Mizushima, Kazutoshi Nakajima, Takashi Iida, Yoshihisa Warashina, Kenichi Sugimoto +1 more | 1991-09-24 |
| 5034921 | High speed optical memory circuit | Kazutoshi Nakajima, Hirofumi Kan, Kenichi Sugimoto, Yoshihiko Mizushima, Takashi Iida +1 more | 1991-07-23 |
| 5020064 | Electromagnetic wave device | Yoshihiko Mizushima, Takashi Iida, Kenichi Sugimoto, Yoshihisa Warashina, Kazutoshi Nakajima | 1991-05-28 |