Issued Patents 1997
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5680007 | Photomultiplier having a photocathode comprised of a compound semiconductor material | Toru Hirohata, Tomoko Suzuki, Masami Yamada | 1997-10-21 |
| 5591986 | Photoemitter electron tube and photodetector | Toru Hirohata, Tuneo Ihara, Masami Yamada | 1997-01-07 |