Issued Patents All Time
Showing 1–12 of 12 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7365356 | Photocathode | Toru Hirohata, Minoru Niigaki, Tomoko Mochizuki | 2008-04-29 |
| 6903363 | Photocathode | Toru Hirohata, Minoru Niigaki, Tomoko Mochizuki | 2005-06-07 |
| 6002141 | Method of using photocathode and method of using electron tube | Minoru Niigaki, Toru Hirohata, Katsuyuki Kinoshita | 1999-12-14 |
| 5986387 | Transmission type electron multiplier and electron tube provided | Minoru Niigaki, Toru Hirohata, Hirofumi Kan | 1999-11-16 |
| 5982094 | Electron tube with polycrystalline diamond photocathode | Minoru Niigaki, Toru Hirohata, Hirofumi Kan | 1999-11-09 |
| 5959400 | Electron tube having a diamond field emitter | Minoru Niigaki, Toru Hirohata, Hirofumi Kan | 1999-09-28 |
| 5747826 | Photoemitter electron tube, and photodetector | Minoru Niigaki, Toru Hirohata, Tuneo Ihara | 1998-05-05 |
| 5710435 | Photomultiplier having a photocathode comprised of semiconductor material | Minoru Niigaki, Toru Hirohata, Tomoko Suzuki | 1998-01-20 |
| 5680007 | Photomultiplier having a photocathode comprised of a compound semiconductor material | Minoru Niigaki, Toru Hirohata, Tomoko Suzuki | 1997-10-21 |
| 5591986 | Photoemitter electron tube and photodetector | Minoru Niigaki, Toru Hirohata, Tuneo Ihara | 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, Tuneo Ihara, Norio Asakura +2 more | 1995-11-28 |
| 5336902 | Semiconductor photo-electron-emitting device | Minoru Nigaki, Tuneo Ihara, Toru Hirohata, Tomoko Suzuki, Kimitsugu Nakamura +4 more | 1994-08-09 |