Issued Patents All Time
Showing 1–6 of 6 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7692391 | Discharge lamp ballast, lighting system and projector | Katsuyoshi Nakada, Hirofumi Konishi, Junichi Hasegawa, Koji Watanabe, Toshiaki Sasaki | 2010-04-06 |
| 7511432 | Discharge lamp lighting device, illumination device, and projector | Koji Watanabe, Hisaji Ito, Toshiaki Sasaki, Junichi Hasegawa, Katsuyoshi Nakada | 2009-03-31 |
| 6380694 | Variable structure circuit topology for HID lamp electronic ballasts | Pradeep Kumar Nandam | 2002-04-30 |
| 5932976 | Discharge lamp driving | Ajay Maheshwari, Tokushi Yamauchi | 1999-08-03 |
| 5469027 | Device for operating a high pressure gas discharge lamp | Hiroshi Nishimura, Noriyuki Fukumori | 1995-11-21 |
| 4734624 | Discharge lamp driving circuit | Haruo Nagase | 1988-03-29 |