Issued Patents All Time
Showing 1–10 of 10 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6121731 | Discharge lamp lighting system with overcurrent protection for an inverter switch or switches | Masaki Kanazawa, Hironobu Sou, Hideki Nakamichi | 2000-09-19 |
| 5777861 | Power supply apparatus having high power-factor and low distortion-factor characteristics | Keiichi Shimizu, Noriyuki Kitamura, Tsutomu Kakitani, Fumihiko Nagasaki, Yuji Takahashi | 1998-07-07 |
| 4992702 | Inverter capable of controlling operating frequency | Keiichi Shimizu, Kenichi Inui | 1991-02-12 |
| 4961029 | Discharge lamp lighting device | Keiichi Shimizu, Kenichi Inui | 1990-10-02 |
| 4847537 | Apparatus for starting and operating a discharge lamp | Akihiro Ueda, Fuminori Nakaya, Kouhei Yuhara | 1989-07-11 |
| 4839564 | Large image display apparatus | Katsuyuki Ide, Hisao Kobayashi | 1989-06-13 |
| 4635052 | Large size image display apparatus | Katsuyuki Ide, Hisao Kobayashi, Mitsuhiro Hamaguchi | 1987-01-06 |
| 4395659 | Power supply device | Kenichi Inui, Yasunobu Koshimura | 1983-07-26 |
| 4388561 | Apparatus for operating discharge lamps | Yasunobu Koshimura, Hisao Kobayashi | 1983-06-14 |
| 4215292 | Apparatus for operating a gaseous discharge lamp | Kenichi Inui, Hisao Kobayashi | 1980-07-29 |