Issued Patents All Time
Showing 1–7 of 7 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8393779 | Lamp and lighting apparatus | — | 2013-03-12 |
| 7161302 | High lamp-power lighting system and fluorescent lamp | Akio Kitada, Tadashi Shimizu | 2007-01-09 |
| 6794818 | Fluorescent lamp | Kouichi Kitagawa, Takashi Ueda | 2004-09-21 |
| 6750613 | High lamp-power lighting system and fluorescent lamp | Akio Kitada, Tadashi Shimizu | 2004-06-15 |
| 6621209 | Fluorescent lamp having a spacer between glass tubes | Hideki Yamauchi, Tsutomu Takemura, Akio Kitada | 2003-09-16 |
| 5828169 | Discharge lamp having an amalgam within a barrier means | Toshiyuki Namura | 1998-10-27 |
| 5646483 | Discharge lamp having cesium compound | Haruo Yamazaki, Toshiyuki Namura | 1997-07-08 |