Issued Patents All Time
Showing 1–12 of 12 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 9743471 | Lighting device and lighting fixture for current control with a solid-state lighting element | Keisuke Ueda, Kenichi Fukuda | 2017-08-22 |
| 9699851 | Dimming lighting circuit and luminaire | Satoshi Yagi, Kei Mitsuyasu, Shinichiro Goto, Tomohiro Sugiura | 2017-07-04 |
| 9131570 | Lighting device and luminaire | Hisanaga Onishi, Nobuo Ukita | 2015-09-08 |
| 9055638 | Lighting device and lighting fixture | Nobuo Ukita, Hisanaga Onishi | 2015-06-09 |
| 8581510 | Discharge lamp lighting apparatus | Tomoyuki Nakano, Junichi Hasegawa, Koji Watanabe | 2013-11-12 |
| 8324829 | Startup control for a high pressure discharge lamp ballast | Tomoyuki Nakano, Koji Watanabe | 2012-12-04 |
| 8222834 | HID lamp ballast with controlled DC step down circuit | Tomoyuki Nakano, Junichi Hasegawa, Koji Watanabe | 2012-07-17 |
| 8207680 | Discharge lamp ballast having an auto-transformer for high voltage detection | Tomoyuki Nakano, Junichi Hasegawa, Koji Watanabe | 2012-06-26 |
| 7692391 | Discharge lamp ballast, lighting system and projector | Hirofumi Konishi, Junichi Hasegawa, Koji Watanabe, Kiyoaki Uchihashi, Toshiaki Sasaki | 2010-04-06 |
| 7622869 | Discharge lamp ballast and projector | Koji Watanabe, Hirofumi Konishi, Junichi Hasegawa, Toshiaki Sasaki | 2009-11-24 |
| 7511432 | Discharge lamp lighting device, illumination device, and projector | Koji Watanabe, Kiyoaki Uchihashi, Hisaji Ito, Toshiaki Sasaki, Junichi Hasegawa | 2009-03-31 |
| 7504782 | Discharge lamp lighting apparatus and projector | Junichi Hasegawa, Hirofumi Konishi, Akihiro Kishimoto, Koji Watanabe | 2009-03-17 |