Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6967446 | High pressure discharge lamp lighting apparatus and high pressure discharge lamp lighting method | Hiroyasu Kisaichi | 2005-11-22 |
| 6181087 | Discharge lamp operating device | Osamu Ishikawa | 2001-01-30 |
| 6133697 | Dimming apparatus for fluorescent lamps | Satoshi Nagai, Kenichiro Nishi, Kentaro Eguchi, Jun Bunya, Osamu Ishikawa | 2000-10-17 |