Issued Patents 1994
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5363014 | Photomultiplier | — | 1994-11-08 |
| 5336902 | Semiconductor photo-electron-emitting device | Minoru Nigaki, Tuneo Ihara, Toru Hirohata, Tomoko Suzuki, Norio Asakura +4 more | 1994-08-09 |