Issued Patents All Time
Showing 1–10 of 10 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| RE38234 | Ultraviolet detector | Hidenaga Warashina | 2003-08-26 |
| 6548958 | Hollow cathode lamp | Toshio Ito, Jyunichi Imakama | 2003-04-15 |
| 6548959 | Discharge tube with substantially exposed cathode tip portion for use as a light source | Nobuharu Harada, Syoji Ishihara | 2003-04-15 |
| 6121621 | Ultraviolet detector | Hidenaga Warashina | 2000-09-19 |
| 5191260 | Gas discharge tube providing improved flow line of electrons | Koji Kawai | 1993-03-02 |
| 5128596 | Gaseous-discharge lamp having reflector in interior thereof | Makoto Miyamoto | 1992-07-07 |
| 5057742 | Discharge tube | Koji Kawai, Koji Takeuchi | 1991-10-15 |
| 5047689 | Gas discharge tube, indirectly heated cathode for use therein and drive circuit therefor | Koji Kawai | 1991-09-10 |
| 4611143 | Composite light source | Makoto Miyamoto | 1986-09-09 |
| 4441048 | Cathode for a gas discharge tube | Hidetugu Takaoka | 1984-04-03 |